diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2020-06-11 15:17:57 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2020-06-11 15:17:57 +0200 |
| commit | f77d26a9fc525286bcef3d4f98b52e17482cf49c (patch) | |
| tree | 6b179c9aa84787773cb601a14a64255e2912154b /arch/powerpc/include/asm | |
| parent | b6bea24d41519e8c31e4798f1c1a3f67e540c5d0 (diff) | |
| parent | f0178fc01fe46bab6a95415f5647d1a74efcad1b (diff) | |
| download | linux-f77d26a9fc525286bcef3d4f98b52e17482cf49c.tar.gz | |
Merge branch 'x86/entry' into ras/core
to fixup conflicts in arch/x86/kernel/cpu/mce/core.c so MCE specific follow up patches can be applied without creating a horrible merge conflict afterwards.
Diffstat (limited to 'arch/powerpc/include/asm')
82 files changed, 1169 insertions, 972 deletions
diff --git a/arch/powerpc/include/asm/asm-405.h b/arch/powerpc/include/asm/asm-405.h deleted file mode 100644 index 7270d3ae7c8e..000000000000 --- a/arch/powerpc/include/asm/asm-405.h +++ /dev/null @@ -1,19 +0,0 @@ -#ifndef _ASM_POWERPC_ASM_405_H -#define _ASM_POWERPC_ASM_405_H - -#include <asm/asm-const.h> - -#ifdef __KERNEL__ -#ifdef CONFIG_IBM405_ERR77 -/* Erratum #77 on the 405 means we need a sync or dcbt before every - * stwcx. The old ATOMIC_SYNC_FIX covered some but not all of this. - */ -#define PPC405_ERR77(ra,rb) stringify_in_c(dcbt ra, rb;) -#define PPC405_ERR77_SYNC stringify_in_c(sync;) -#else -#define PPC405_ERR77(ra,rb) -#define PPC405_ERR77_SYNC -#endif -#endif - -#endif /* _ASM_POWERPC_ASM_405_H */ diff --git a/arch/powerpc/include/asm/atomic.h b/arch/powerpc/include/asm/atomic.h index 31c231ea56b7..498785ffc25f 100644 --- a/arch/powerpc/include/asm/atomic.h +++ b/arch/powerpc/include/asm/atomic.h @@ -10,7 +10,6 @@ #include <linux/types.h> #include <asm/cmpxchg.h> #include <asm/barrier.h> -#include <asm/asm-405.h> #define ATOMIC_INIT(i) { (i) } @@ -47,7 +46,6 @@ static __inline__ void atomic_##op(int a, atomic_t *v) \ __asm__ __volatile__( \ "1: lwarx %0,0,%3 # atomic_" #op "\n" \ #asm_op " %0,%2,%0\n" \ - PPC405_ERR77(0,%3) \ " stwcx. %0,0,%3 \n" \ " bne- 1b\n" \ : "=&r" (t), "+m" (v->counter) \ @@ -63,7 +61,6 @@ static inline int atomic_##op##_return_relaxed(int a, atomic_t *v) \ __asm__ __volatile__( \ "1: lwarx %0,0,%3 # atomic_" #op "_return_relaxed\n" \ #asm_op " %0,%2,%0\n" \ - PPC405_ERR77(0, %3) \ " stwcx. %0,0,%3\n" \ " bne- 1b\n" \ : "=&r" (t), "+m" (v->counter) \ @@ -81,7 +78,6 @@ static inline int atomic_fetch_##op##_relaxed(int a, atomic_t *v) \ __asm__ __volatile__( \ "1: lwarx %0,0,%4 # atomic_fetch_" #op "_relaxed\n" \ #asm_op " %1,%3,%0\n" \ - PPC405_ERR77(0, %4) \ " stwcx. %1,0,%4\n" \ " bne- 1b\n" \ : "=&r" (res), "=&r" (t), "+m" (v->counter) \ @@ -130,7 +126,6 @@ static __inline__ void atomic_inc(atomic_t *v) __asm__ __volatile__( "1: lwarx %0,0,%2 # atomic_inc\n\ addic %0,%0,1\n" - PPC405_ERR77(0,%2) " stwcx. %0,0,%2 \n\ bne- 1b" : "=&r" (t), "+m" (v->counter) @@ -146,7 +141,6 @@ static __inline__ int atomic_inc_return_relaxed(atomic_t *v) __asm__ __volatile__( "1: lwarx %0,0,%2 # atomic_inc_return_relaxed\n" " addic %0,%0,1\n" - PPC405_ERR77(0, %2) " stwcx. %0,0,%2\n" " bne- 1b" : "=&r" (t), "+m" (v->counter) @@ -163,7 +157,6 @@ static __inline__ void atomic_dec(atomic_t *v) __asm__ __volatile__( "1: lwarx %0,0,%2 # atomic_dec\n\ addic %0,%0,-1\n" - PPC405_ERR77(0,%2)\ " stwcx. %0,0,%2\n\ bne- 1b" : "=&r" (t), "+m" (v->counter) @@ -179,7 +172,6 @@ static __inline__ int atomic_dec_return_relaxed(atomic_t *v) __asm__ __volatile__( "1: lwarx %0,0,%2 # atomic_dec_return_relaxed\n" " addic %0,%0,-1\n" - PPC405_ERR77(0, %2) " stwcx. %0,0,%2\n" " bne- 1b" : "=&r" (t), "+m" (v->counter) @@ -220,7 +212,6 @@ static __inline__ int atomic_fetch_add_unless(atomic_t *v, int a, int u) cmpw 0,%0,%3 \n\ beq 2f \n\ add %0,%2,%0 \n" - PPC405_ERR77(0,%2) " stwcx. %0,0,%1 \n\ bne- 1b \n" PPC_ATOMIC_EXIT_BARRIER @@ -251,7 +242,6 @@ static __inline__ int atomic_inc_not_zero(atomic_t *v) cmpwi 0,%0,0\n\ beq- 2f\n\ addic %1,%0,1\n" - PPC405_ERR77(0,%2) " stwcx. %1,0,%2\n\ bne- 1b\n" PPC_ATOMIC_EXIT_BARRIER @@ -280,7 +270,6 @@ static __inline__ int atomic_dec_if_positive(atomic_t *v) cmpwi %0,1\n\ addi %0,%0,-1\n\ blt- 2f\n" - PPC405_ERR77(0,%1) " stwcx. %0,0,%1\n\ bne- 1b" PPC_ATOMIC_EXIT_BARRIER diff --git a/arch/powerpc/include/asm/bitops.h b/arch/powerpc/include/asm/bitops.h index 28dcf8222943..4a4d3afd5340 100644 --- a/arch/powerpc/include/asm/bitops.h +++ b/arch/powerpc/include/asm/bitops.h @@ -41,7 +41,6 @@ #include <linux/compiler.h> #include <asm/asm-compat.h> #include <asm/synch.h> -#include <asm/asm-405.h> /* PPC bit number conversion */ #define PPC_BITLSHIFT(be) (BITS_PER_LONG - 1 - (be)) @@ -73,7 +72,6 @@ static inline void fn(unsigned long mask, \ prefix \ "1:" PPC_LLARX(%0,0,%3,0) "\n" \ stringify_in_c(op) "%0,%0,%2\n" \ - PPC405_ERR77(0,%3) \ PPC_STLCX "%0,0,%3\n" \ "bne- 1b\n" \ : "=&r" (old), "+m" (*p) \ @@ -119,7 +117,6 @@ static inline unsigned long fn( \ prefix \ "1:" PPC_LLARX(%0,0,%3,eh) "\n" \ stringify_in_c(op) "%1,%0,%2\n" \ - PPC405_ERR77(0,%3) \ PPC_STLCX "%1,0,%3\n" \ "bne- 1b\n" \ postfix \ @@ -175,7 +172,6 @@ clear_bit_unlock_return_word(int nr, volatile unsigned long *addr) PPC_RELEASE_BARRIER "1:" PPC_LLARX(%0,0,%3,0) "\n" "andc %1,%0,%2\n" - PPC405_ERR77(0,%3) PPC_STLCX "%1,0,%3\n" "bne- 1b\n" : "=&r" (old), "=&r" (t) diff --git a/arch/powerpc/include/asm/book3s/32/hash.h b/arch/powerpc/include/asm/book3s/32/hash.h index 34a7215ae81e..2a0a467d2985 100644 --- a/arch/powerpc/include/asm/book3s/32/hash.h +++ b/arch/powerpc/include/asm/book3s/32/hash.h @@ -17,9 +17,9 @@ * updating the accessed and modified bits in the page table tree. */ -#define _PAGE_USER 0x001 /* usermode access allowed */ -#define _PAGE_RW 0x002 /* software: user write access allowed */ -#define _PAGE_PRESENT 0x004 /* software: pte contains a translation */ +#define _PAGE_PRESENT 0x001 /* software: pte contains a translation */ +#define _PAGE_HASHPTE 0x002 /* hash_page has made an HPTE for this pte */ +#define _PAGE_USER 0x004 /* usermode access allowed */ #define _PAGE_GUARDED 0x008 /* G: prohibit speculative access */ #define _PAGE_COHERENT 0x010 /* M: enforce memory coherence (SMP systems) */ #define _PAGE_NO_CACHE 0x020 /* I: cache inhibit */ @@ -27,7 +27,7 @@ #define _PAGE_DIRTY 0x080 /* C: page changed */ #define _PAGE_ACCESSED 0x100 /* R: page referenced */ #define _PAGE_EXEC 0x200 /* software: exec allowed */ -#define _PAGE_HASHPTE 0x400 /* hash_page has made an HPTE for this pte */ +#define _PAGE_RW 0x400 /* software: user write access allowed */ #define _PAGE_SPECIAL 0x800 /* software: Special page */ #ifdef CONFIG_PTE_64BIT diff --git a/arch/powerpc/include/asm/book3s/32/kup.h b/arch/powerpc/include/asm/book3s/32/kup.h index 3c0ba22dc360..32fd4452e960 100644 --- a/arch/powerpc/include/asm/book3s/32/kup.h +++ b/arch/powerpc/include/asm/book3s/32/kup.h @@ -2,6 +2,7 @@ #ifndef _ASM_POWERPC_BOOK3S_32_KUP_H #define _ASM_POWERPC_BOOK3S_32_KUP_H +#include <asm/bug.h> #include <asm/book3s/32/mmu-hash.h> #ifdef __ASSEMBLY__ @@ -75,7 +76,7 @@ .macro kuap_check current, gpr #ifdef CONFIG_PPC_KUAP_DEBUG - lwz \gpr2, KUAP(thread) + lwz \gpr, THREAD + KUAP(\current) 999: twnei \gpr, 0 EMIT_BUG_ENTRY 999b, __FILE__, __LINE__, (BUGFLAG_WARNING | BUGFLAG_ONCE) #endif @@ -108,7 +109,7 @@ static __always_inline void allow_user_access(void __user *to, const void __user u32 addr, end; BUILD_BUG_ON(!__builtin_constant_p(dir)); - BUILD_BUG_ON(dir == KUAP_CURRENT); + BUILD_BUG_ON(dir & ~KUAP_READ_WRITE); if (!(dir & KUAP_WRITE)) return; @@ -131,7 +132,7 @@ static __always_inline void prevent_user_access(void __user *to, const void __us BUILD_BUG_ON(!__builtin_constant_p(dir)); - if (dir == KUAP_CURRENT) { + if (dir & KUAP_CURRENT_WRITE) { u32 kuap = current->thread.kuap; if (unlikely(!kuap)) diff --git a/arch/powerpc/include/asm/book3s/32/pgtable.h b/arch/powerpc/include/asm/book3s/32/pgtable.h index 7549393c4c43..224912432821 100644 --- a/arch/powerpc/include/asm/book3s/32/pgtable.h +++ b/arch/powerpc/include/asm/book3s/32/pgtable.h @@ -2,7 +2,6 @@ #ifndef _ASM_POWERPC_BOOK3S_32_PGTABLE_H #define _ASM_POWERPC_BOOK3S_32_PGTABLE_H -#define __ARCH_USE_5LEVEL_HACK #include <asm-generic/pgtable-nopmd.h> #include <asm/book3s/32/hash.h> @@ -113,6 +112,9 @@ static inline bool pte_user(pte_t pte) #define PMD_TABLE_SIZE 0 #define PUD_TABLE_SIZE 0 #define PGD_TABLE_SIZE (sizeof(pgd_t) << PGD_INDEX_SIZE) + +/* Bits to mask out from a PMD to get to the PTE page */ +#define PMD_MASKED_BITS (PTE_TABLE_SIZE - 1) #endif /* __ASSEMBLY__ */ #define PTRS_PER_PTE (1 << PTE_INDEX_SIZE) @@ -188,14 +190,14 @@ int map_kernel_page(unsigned long va, phys_addr_t pa, pgprot_t prot); * memory shall not share segments. */ #if defined(CONFIG_STRICT_KERNEL_RWX) && defined(CONFIG_MODULES) -#define VMALLOC_START ((_ALIGN((long)high_memory, 256L << 20) + VMALLOC_OFFSET) & \ +#define VMALLOC_START ((ALIGN((long)high_memory, 256L << 20) + VMALLOC_OFFSET) & \ ~(VMALLOC_OFFSET - 1)) #else #define VMALLOC_START ((((long)high_memory + VMALLOC_OFFSET) & ~(VMALLOC_OFFSET-1))) #endif #ifdef CONFIG_KASAN_VMALLOC -#define VMALLOC_END _ALIGN_DOWN(ioremap_bot, PAGE_SIZE << KASAN_SHADOW_SCALE_SHIFT) +#define VMALLOC_END ALIGN_DOWN(ioremap_bot, PAGE_SIZE << KASAN_SHADOW_SCALE_SHIFT) #else #define VMALLOC_END ioremap_bot #endif @@ -218,7 +220,7 @@ int map_kernel_page(unsigned long va, phys_addr_t pa, pgprot_t prot); */ #define pte_clear(mm, addr, ptep) \ - do { pte_update(ptep, ~_PAGE_HASHPTE, 0); } while (0) + do { pte_update(mm, addr, ptep, ~_PAGE_HASHPTE, 0, 0); } while (0) #define pmd_none(pmd) (!pmd_val(pmd)) #define pmd_bad(pmd) (pmd_val(pmd) & _PMD_BAD) @@ -253,84 +255,68 @@ extern void flush_hash_entry(struct mm_struct *mm, pte_t *ptep, * and the PTE may be either 32 or 64 bit wide. In the later case, * when using atomic updates, only the low part of the PTE is * accessed atomically. - * - * In addition, on 44x, we also maintain a global flag indicating - * that an executable user mapping was modified, which is needed - * to properly flush the virtually tagged instruction cache of - * those implementations. */ -#ifndef CONFIG_PTE_64BIT -static inline unsigned long pte_update(pte_t *p, - unsigned long clr, - unsigned long set) -{ - unsigned long old, tmp; - - __asm__ __volatile__("\ -1: lwarx %0,0,%3\n\ - andc %1,%0,%4\n\ - or %1,%1,%5\n" -" stwcx. %1,0,%3\n\ - bne- 1b" - : "=&r" (old), "=&r" (tmp), "=m" (*p) - : "r" (p), "r" (clr), "r" (set), "m" (*p) - : "cc" ); - - return old; -} -#else /* CONFIG_PTE_64BIT */ -static inline unsigned long long pte_update(pte_t *p, - unsigned long clr, - unsigned long set) +static inline pte_basic_t pte_update(struct mm_struct *mm, unsigned long addr, pte_t *p, + unsigned long clr, unsigned long set, int huge) { - unsigned long long old; + pte_basic_t old; unsigned long tmp; - __asm__ __volatile__("\ -1: lwarx %L0,0,%4\n\ - lwzx %0,0,%3\n\ - andc %1,%L0,%5\n\ - or %1,%1,%6\n" -" stwcx. %1,0,%4\n\ - bne- 1b" + __asm__ __volatile__( +#ifndef CONFIG_PTE_64BIT +"1: lwarx %0, 0, %3\n" +" andc %1, %0, %4\n" +#else +"1: lwarx %L0, 0, %3\n" +" lwz %0, -4(%3)\n" +" andc %1, %L0, %4\n" +#endif +" or %1, %1, %5\n" +" stwcx. %1, 0, %3\n" +" bne- 1b" : "=&r" (old), "=&r" (tmp), "=m" (*p) - : "r" (p), "r" ((unsigned long)(p) + 4), "r" (clr), "r" (set), "m" (*p) +#ifndef CONFIG_PTE_64BIT + : "r" (p), +#else + : "b" ((unsigned long)(p) + 4), +#endif + "r" (clr), "r" (set), "m" (*p) : "cc" ); return old; } -#endif /* CONFIG_PTE_64BIT */ /* * 2.6 calls this without flushing the TLB entry; this is wrong * for our hash-based implementation, we fix that up here. */ #define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG -static inline int __ptep_test_and_clear_young(unsigned int context, unsigned long addr, pte_t *ptep) +static inline int __ptep_test_and_clear_young(struct mm_struct *mm, + unsigned long addr, pte_t *ptep) { unsigned long old; - old = pte_update(ptep, _PAGE_ACCESSED, 0); + old = pte_update(mm, addr, ptep, _PAGE_ACCESSED, 0, 0); if (old & _PAGE_HASHPTE) { unsigned long ptephys = __pa(ptep) & PAGE_MASK; - flush_hash_pages(context, addr, ptephys, 1); + flush_hash_pages(mm->context.id, addr, ptephys, 1); } return (old & _PAGE_ACCESSED) != 0; } #define ptep_test_and_clear_young(__vma, __addr, __ptep) \ - __ptep_test_and_clear_young((__vma)->vm_mm->context.id, __addr, __ptep) + __ptep_test_and_clear_young((__vma)->vm_mm, __addr, __ptep) #define __HAVE_ARCH_PTEP_GET_AND_CLEAR static inline pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep) { - return __pte(pte_update(ptep, ~_PAGE_HASHPTE, 0)); + return __pte(pte_update(mm, addr, ptep, ~_PAGE_HASHPTE, 0, 0)); } #define __HAVE_ARCH_PTEP_SET_WRPROTECT static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, pte_t *ptep) { - pte_update(ptep, _PAGE_RW, 0); + pte_update(mm, addr, ptep, _PAGE_RW, 0, 0); } static inline void __ptep_set_access_flags(struct vm_area_struct *vma, @@ -341,7 +327,7 @@ static inline void __ptep_set_access_flags(struct vm_area_struct *vma, unsigned long set = pte_val(entry) & (_PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_RW | _PAGE_EXEC); - pte_update(ptep, 0, set); + pte_update(vma->vm_mm, address, ptep, 0, set, 0); flush_tlb_page(vma, address); } @@ -349,26 +335,9 @@ static inline void __ptep_set_access_flags(struct vm_area_struct *vma, #define __HAVE_ARCH_PTE_SAME #define pte_same(A,B) (((pte_val(A) ^ pte_val(B)) & ~_PAGE_HASHPTE) == 0) -#define pmd_page_vaddr(pmd) \ - ((unsigned long)__va(pmd_val(pmd) & ~(PTE_TABLE_SIZE - 1))) #define pmd_page(pmd) \ pfn_to_page(pmd_val(pmd) >> PAGE_SHIFT) -/* to find an entry in a kernel page-table-directory */ -#define pgd_offset_k(address) pgd_offset(&init_mm, address) - -/* to find an entry in a page-table-directory */ -#define pgd_index(address) ((address) >> PGDIR_SHIFT) -#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address)) - -/* Find an entry in the third-level page table.. */ -#define pte_index(address) \ - (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)) -#define pte_offset_kernel(dir, addr) \ - ((pte_t *) pmd_page_vaddr(*(dir)) + pte_index(addr)) -#define pte_offset_map(dir, addr) pte_offset_kernel((dir), (addr)) -static inline void pte_unmap(pte_t *pte) { } - /* * Encode and decode a swap entry. * Note that the bits we use in a PTE for representing a swap entry @@ -539,7 +508,7 @@ static inline void __set_pte_at(struct mm_struct *mm, unsigned long addr, *ptep = __pte((pte_val(*ptep) & _PAGE_HASHPTE) | (pte_val(pte) & ~_PAGE_HASHPTE)); else - pte_update(ptep, ~_PAGE_HASHPTE, pte_val(pte)); + pte_update(mm, addr, ptep, ~_PAGE_HASHPTE, pte_val(pte), 0); #elif defined(CONFIG_PTE_64BIT) /* Second case is 32-bit with 64-bit PTE. In this case, we diff --git a/arch/powerpc/include/asm/book3s/64/hash.h b/arch/powerpc/include/asm/book3s/64/hash.h index 6fc4520092c7..73ad038ed10b 100644 --- a/arch/powerpc/include/asm/book3s/64/hash.h +++ b/arch/powerpc/include/asm/book3s/64/hash.h @@ -134,9 +134,9 @@ static inline int get_region_id(unsigned long ea) #define hash__pmd_bad(pmd) (pmd_val(pmd) & H_PMD_BAD_BITS) #define hash__pud_bad(pud) (pud_val(pud) & H_PUD_BAD_BITS) -static inline int hash__pgd_bad(pgd_t pgd) +static inline int hash__p4d_bad(p4d_t p4d) { - return (pgd_val(pgd) == 0); + return (p4d_val(p4d) == 0); } #ifdef CONFIG_STRICT_KERNEL_RWX extern void hash__mark_rodata_ro(void); diff --git a/arch/powerpc/include/asm/book3s/64/kup-radix.h b/arch/powerpc/include/asm/book3s/64/kup-radix.h index 3bcef989a35d..3ee1ec60be84 100644 --- a/arch/powerpc/include/asm/book3s/64/kup-radix.h +++ b/arch/powerpc/include/asm/book3s/64/kup-radix.h @@ -12,11 +12,17 @@ #ifdef __ASSEMBLY__ -.macro kuap_restore_amr gpr +.macro kuap_restore_amr gpr1, gpr2 #ifdef CONFIG_PPC_KUAP BEGIN_MMU_FTR_SECTION_NESTED(67) - ld \gpr, STACK_REGS_KUAP(r1) - mtspr SPRN_AMR, \gpr + mfspr \gpr1, SPRN_AMR + ld \gpr2, STACK_REGS_KUAP(r1) + cmpd \gpr1, \gpr2 + beq 998f + isync + mtspr SPRN_AMR, \gpr2 + /* No isync required, see kuap_restore_amr() */ +998: END_MMU_FTR_SECTION_NESTED_IFSET(MMU_FTR_RADIX_KUAP, 67) #endif .endm @@ -60,10 +66,28 @@ #include <asm/mmu.h> #include <asm/ptrace.h> -static inline void kuap_restore_amr(struct pt_regs *regs) +static inline void kuap_restore_amr(struct pt_regs *regs, unsigned long amr) { - if (mmu_has_feature(MMU_FTR_RADIX_KUAP)) + if (mmu_has_feature(MMU_FTR_RADIX_KUAP) && unlikely(regs->kuap != amr)) { + isync(); mtspr(SPRN_AMR, regs->kuap); + /* + * No isync required here because we are about to RFI back to + * previous context before any user accesses would be made, + * which is a CSI. + */ + } +} + +static inline unsigned long kuap_get_and_check_amr(void) +{ + if (mmu_has_feature(MMU_FTR_RADIX_KUAP)) { + unsigned long amr = mfspr(SPRN_AMR); + if (IS_ENABLED(CONFIG_PPC_KUAP_DEBUG)) /* kuap_check_amr() */ + WARN_ON_ONCE(amr != AMR_KUAP_BLOCKED); + return amr; + } + return 0; } static inline void kuap_check_amr(void) @@ -142,13 +166,18 @@ bad_kuap_fault(struct pt_regs *regs, unsigned long address, bool is_write) "Bug: %s fault blocked by AMR!", is_write ? "Write" : "Read"); } #else /* CONFIG_PPC_KUAP */ -static inline void kuap_restore_amr(struct pt_regs *regs) +static inline void kuap_restore_amr(struct pt_regs *regs, unsigned long amr) { } static inline void kuap_check_amr(void) { } + +static inline unsigned long kuap_get_and_check_amr(void) +{ + return 0; +} #endif /* CONFIG_PPC_KUAP */ #endif /* __ASSEMBLY__ */ diff --git a/arch/powerpc/include/asm/book3s/64/mmu.h b/arch/powerpc/include/asm/book3s/64/mmu.h index bb3deb76c951..5393a535240c 100644 --- a/arch/powerpc/include/asm/book3s/64/mmu.h +++ b/arch/powerpc/include/asm/book3s/64/mmu.h @@ -116,6 +116,9 @@ typedef struct { /* Number of users of the external (Nest) MMU */ atomic_t copros; + /* Number of user space windows opened in process mm_context */ + atomic_t vas_windows; + struct hash_mm_context *hash_context; unsigned long vdso_base; @@ -208,7 +211,7 @@ void hash__early_init_devtree(void); void radix__early_init_devtree(void); extern void hash__early_init_mmu(void); extern void radix__early_init_mmu(void); -static inline void early_init_mmu(void) +static inline void __init early_init_mmu(void) { if (radix_enabled()) return radix__early_init_mmu(); diff --git a/arch/powerpc/include/asm/book3s/64/pgalloc.h b/arch/powerpc/include/asm/book3s/64/pgalloc.h index a41e91bd0580..69c5b051734f 100644 --- a/arch/powerpc/include/asm/book3s/64/pgalloc.h +++ b/arch/powerpc/include/asm/book3s/64/pgalloc.h @@ -85,9 +85,9 @@ static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd) kmem_cache_free(PGT_CACHE(PGD_INDEX_SIZE), pgd); } -static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pud_t *pud) +static inline void p4d_populate(struct mm_struct *mm, p4d_t *pgd, pud_t *pud) { - *pgd = __pgd(__pgtable_ptr_val(pud) | PGD_VAL_BITS); + *pgd = __p4d(__pgtable_ptr_val(pud) | PGD_VAL_BITS); } static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr) diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h index 368b136517e0..25c3cb8272c0 100644 --- a/arch/powerpc/include/asm/book3s/64/pgtable.h +++ b/arch/powerpc/include/asm/book3s/64/pgtable.h @@ -2,7 +2,7 @@ #ifndef _ASM_POWERPC_BOOK3S_64_PGTABLE_H_ #define _ASM_POWERPC_BOOK3S_64_PGTABLE_H_ -#include <asm-generic/5level-fixup.h> +#include <asm-generic/pgtable-nop4d.h> #ifndef __ASSEMBLY__ #include <linux/mmdebug.h> @@ -251,7 +251,7 @@ extern unsigned long __pmd_frag_size_shift; /* Bits to mask out from a PUD to get to the PMD page */ #define PUD_MASKED_BITS 0xc0000000000000ffUL /* Bits to mask out from a PGD to get to the PUD page */ -#define PGD_MASKED_BITS 0xc0000000000000ffUL +#define P4D_MASKED_BITS 0xc0000000000000ffUL /* * Used as an indicator for rcu callback functions @@ -553,6 +553,12 @@ static inline pte_t pte_clear_savedwrite(pte_t pte) } #endif /* CONFIG_NUMA_BALANCING */ +static inline bool pte_hw_valid(pte_t pte) +{ + return (pte_raw(pte) & cpu_to_be64(_PAGE_PRESENT | _PAGE_PTE)) == + cpu_to_be64(_PAGE_PRESENT | _PAGE_PTE); +} + static inline int pte_present(pte_t pte) { /* @@ -561,12 +567,11 @@ static inline int pte_present(pte_t pte) * invalid during ptep_set_access_flags. Hence we look for _PAGE_INVALID * if we find _PAGE_PRESENT cleared. */ - return !!(pte_raw(pte) & cpu_to_be64(_PAGE_PRESENT | _PAGE_INVALID)); -} -static inline bool pte_hw_valid(pte_t pte) -{ - return !!(pte_raw(pte) & cpu_to_be64(_PAGE_PRESENT)); + if (pte_hw_valid(pte)) + return true; + return (pte_raw(pte) & cpu_to_be64(_PAGE_INVALID | _PAGE_PTE)) == + cpu_to_be64(_PAGE_INVALID | _PAGE_PTE); } #ifdef CONFIG_PPC_MEM_KEYS @@ -949,81 +954,59 @@ static inline bool pud_access_permitted(pud_t pud, bool write) return pte_access_permitted(pud_pte(pud), write); } -#define pgd_write(pgd) pte_write(pgd_pte(pgd)) +#define __p4d_raw(x) ((p4d_t) { __pgd_raw(x) }) +static inline __be64 p4d_raw(p4d_t x) +{ + return pgd_raw(x.pgd); +} -static inline void pgd_clear(pgd_t *pgdp) +#define p4d_write(p4d) pte_write(p4d_pte(p4d)) + +static inline void p4d_clear(p4d_t *p4dp) { - *pgdp = __pgd(0); + *p4dp = __p4d(0); } -static inline int pgd_none(pgd_t pgd) +static inline int p4d_none(p4d_t p4d) { - return !pgd_raw(pgd); + return !p4d_raw(p4d); } -static inline int pgd_present(pgd_t pgd) +static inline int p4d_present(p4d_t p4d) { - return !!(pgd_raw(pgd) & cpu_to_be64(_PAGE_PRESENT)); + return !!(p4d_raw(p4d) & cpu_to_be64(_PAGE_PRESENT)); } -static inline pte_t pgd_pte(pgd_t pgd) +static inline pte_t p4d_pte(p4d_t p4d) { - return __pte_raw(pgd_raw(pgd)); + return __pte_raw(p4d_raw(p4d)); } -static inline pgd_t pte_pgd(pte_t pte) +static inline p4d_t pte_p4d(pte_t pte) { - return __pgd_raw(pte_raw(pte)); + return __p4d_raw(pte_raw(pte)); } -static inline int pgd_bad(pgd_t pgd) +static inline int p4d_bad(p4d_t p4d) { if (radix_enabled()) - return radix__pgd_bad(pgd); - return hash__pgd_bad(pgd); + return radix__p4d_bad(p4d); + return hash__p4d_bad(p4d); } -#define pgd_access_permitted pgd_access_permitted -static inline bool pgd_access_permitted(pgd_t pgd, bool write) +#define p4d_access_permitted p4d_access_permitted +static inline bool p4d_access_permitted(p4d_t p4d, bool write) { - return pte_access_permitted(pgd_pte(pgd), write); + return pte_access_permitted(p4d_pte(p4d), write); } -extern struct page *pgd_page(pgd_t pgd); +extern struct page *p4d_page(p4d_t p4d); /* Pointers in the page table tree are physical addresses */ #define __pgtable_ptr_val(ptr) __pa(ptr) -#define pmd_page_vaddr(pmd) __va(pmd_val(pmd) & ~PMD_MASKED_BITS) #define pud_page_vaddr(pud) __va(pud_val(pud) & ~PUD_MASKED_BITS) -#define pgd_page_vaddr(pgd) __va(pgd_val(pgd) & ~PGD_MASKED_BITS) - -#define pgd_index(address) (((address) >> (PGDIR_SHIFT)) & (PTRS_PER_PGD - 1)) -#define pud_index(address) (((address) >> (PUD_SHIFT)) & (PTRS_PER_PUD - 1)) -#define pmd_index(address) (((address) >> (PMD_SHIFT)) & (PTRS_PER_PMD - 1)) -#define pte_index(address) (((address) >> (PAGE_SHIFT)) & (PTRS_PER_PTE - 1)) - -/* - * Find an entry in a page-table-directory. We combine the address region - * (the high order N bits) and the pgd portion of the address. - */ - -#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address)) - -#define pud_offset(pgdp, addr) \ - (((pud_t *) pgd_page_vaddr(*(pgdp))) + pud_index(addr)) -#define pmd_offset(pudp,addr) \ - (((pmd_t *) pud_page_vaddr(*(pudp))) + pmd_index(addr)) -#define pte_offset_kernel(dir,addr) \ - (((pte_t *) pmd_page_vaddr(*(dir))) + pte_index(addr)) - -#define pte_offset_map(dir,addr) pte_offset_kernel((dir), (addr)) - -static inline void pte_unmap(pte_t *pte) { } - -/* to find an entry in a kernel page-table-directory */ -/* This now only contains the vmalloc pages */ -#define pgd_offset_k(address) pgd_offset(&init_mm, address) +#define p4d_page_vaddr(p4d) __va(p4d_val(p4d) & ~P4D_MASKED_BITS) #define pte_ERROR(e) \ pr_err("%s:%d: bad pte %08lx.\n", __FILE__, __LINE__, pte_val(e)) @@ -1139,8 +1122,11 @@ extern pmd_t mk_pmd(struct page *page, pgprot_t pgprot); extern pmd_t pmd_modify(pmd_t pmd, pgprot_t newprot); extern void set_pmd_at(struct mm_struct *mm, unsigned long addr, pmd_t *pmdp, pmd_t pmd); -extern void update_mmu_cache_pmd(struct vm_area_struct *vma, unsigned long addr, - pmd_t *pmd); +static inline void update_mmu_cache_pmd(struct vm_area_struct *vma, + unsigned long addr, pmd_t *pmd) +{ +} + extern int hash__has_transparent_hugepage(void); static inline int has_transparent_hugepage(void) { @@ -1168,10 +1154,6 @@ static inline int pmd_large(pmd_t pmd) return !!(pmd_raw(pmd) & cpu_to_be64(_PAGE_PTE)); } -static inline pmd_t pmd_mknotpresent(pmd_t pmd) -{ - return __pmd(pmd_val(pmd) & ~_PAGE_PRESENT); -} /* * For radix we should always find H_PAGE_HASHPTE zero. Hence * the below will work for radix too @@ -1260,6 +1242,11 @@ static inline pmd_t pmdp_collapse_flush(struct vm_area_struct *vma, } #define pmdp_collapse_flush pmdp_collapse_flush +#define __HAVE_ARCH_PMDP_HUGE_GET_AND_CLEAR_FULL +pmd_t pmdp_huge_get_and_clear_full(struct vm_area_struct *vma, + unsigned long addr, + pmd_t *pmdp, int full); + #define __HAVE_ARCH_PGTABLE_DEPOSIT static inline void pgtable_trans_huge_deposit(struct mm_struct *mm, pmd_t *pmdp, pgtable_t pgtable) @@ -1370,11 +1357,11 @@ static inline bool pud_is_leaf(pud_t pud) return !!(pud_raw(pud) & cpu_to_be64(_PAGE_PTE)); } -#define pgd_is_leaf pgd_is_leaf -#define pgd_leaf pgd_is_leaf -static inline bool pgd_is_leaf(pgd_t pgd) +#define p4d_is_leaf p4d_is_leaf +#define p4d_leaf p4d_is_leaf +static inline bool p4d_is_leaf(p4d_t p4d) { - return !!(pgd_raw(pgd) & cpu_to_be64(_PAGE_PTE)); + return !!(p4d_raw(p4d) & cpu_to_be64(_PAGE_PTE)); } #endif /* __ASSEMBLY__ */ diff --git a/arch/powerpc/include/asm/book3s/64/radix.h b/arch/powerpc/include/asm/book3s/64/radix.h index 08c222d5b764..0cba794c4fb8 100644 --- a/arch/powerpc/include/asm/book3s/64/radix.h +++ b/arch/powerpc/include/asm/book3s/64/radix.h @@ -30,7 +30,7 @@ /* Don't have anything in the reserved bits and leaf bits */ #define RADIX_PMD_BAD_BITS 0x60000000000000e0UL #define RADIX_PUD_BAD_BITS 0x60000000000000e0UL -#define RADIX_PGD_BAD_BITS 0x60000000000000e0UL +#define RADIX_P4D_BAD_BITS 0x60000000000000e0UL #define RADIX_PMD_SHIFT (PAGE_SHIFT + RADIX_PTE_INDEX_SIZE) #define RADIX_PUD_SHIFT (RADIX_PMD_SHIFT + RADIX_PMD_INDEX_SIZE) @@ -227,9 +227,9 @@ static inline int radix__pud_bad(pud_t pud) } -static inline int radix__pgd_bad(pgd_t pgd) +static inline int radix__p4d_bad(p4d_t p4d) { - return !!(pgd_val(pgd) & RADIX_PGD_BAD_BITS); + return !!(p4d_val(p4d) & RADIX_P4D_BAD_BITS); } #ifdef CONFIG_TRANSPARENT_HUGEPAGE diff --git a/arch/powerpc/include/asm/book3s/64/tlbflush-hash.h b/arch/powerpc/include/asm/book3s/64/tlbflush-hash.h index 64d02a704bcb..3b95769739c7 100644 --- a/arch/powerpc/include/asm/book3s/64/tlbflush-hash.h +++ b/arch/powerpc/include/asm/book3s/64/tlbflush-hash.h @@ -113,8 +113,7 @@ static inline void hash__flush_tlb_kernel_range(unsigned long start, struct mmu_gather; extern void hash__tlb_flush(struct mmu_gather *tlb); /* Private function for use by PCI IO mapping code */ -extern void __flush_hash_table_range(struct mm_struct *mm, unsigned long start, - unsigned long end); +extern void __flush_hash_table_range(unsigned long start, unsigned long end); extern void flush_tlb_pmd_range(struct mm_struct *mm, pmd_t *pmd, unsigned long addr); #endif /* _ASM_POWERPC_BOOK3S_64_TLBFLUSH_HASH_H */ diff --git a/arch/powerpc/include/asm/cache.h b/arch/powerpc/include/asm/cache.h index 609cab1d58f2..2124b7090db9 100644 --- a/arch/powerpc/include/asm/cache.h +++ b/arch/powerpc/include/asm/cache.h @@ -6,7 +6,7 @@ /* bytes per L1 cache line */ -#if defined(CONFIG_PPC_8xx) || defined(CONFIG_403GCX) +#if defined(CONFIG_PPC_8xx) #define L1_CACHE_SHIFT 4 #define MAX_COPY_PREFETCH 1 #define IFETCH_ALIGN_SHIFT 2 diff --git a/arch/powerpc/include/asm/cacheflush.h b/arch/powerpc/include/asm/cacheflush.h index e92191b390f3..de600b915a3c 100644 --- a/arch/powerpc/include/asm/cacheflush.h +++ b/arch/powerpc/include/asm/cacheflush.h @@ -4,23 +4,9 @@ #ifndef _ASM_POWERPC_CACHEFLUSH_H #define _ASM_POWERPC_CACHEFLUSH_H -#ifdef __KERNEL__ - #include <linux/mm.h> #include <asm/cputable.h> -/* - * No cache flushing is required when address mappings are changed, - * because the caches on PowerPCs are physically addressed. - */ -#define flush_cache_all() do { } while (0) -#define flush_cache_mm(mm) do { } while (0) -#define flush_cache_dup_mm(mm) do { } while (0) -#define flush_cache_range(vma, start, end) do { } while (0) -#define flush_cache_page(vma, vmaddr, pfn) do { } while (0) -#define flush_icache_page(vma, page) do { } while (0) -#define flush_cache_vunmap(start, end) do { } while (0) - #ifdef CONFIG_PPC_BOOK3S_64 /* * Book3s has no ptesync after setting a pte, so without this ptesync it's @@ -33,20 +19,20 @@ static inline void flush_cache_vmap(unsigned long start, unsigned long end) { asm volatile("ptesync" ::: "memory"); } -#else -static inline void flush_cache_vmap(unsigned long start, unsigned long end) { } -#endif +#define flush_cache_vmap flush_cache_vmap +#endif /* CONFIG_PPC_BOOK3S_64 */ #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 extern void flush_dcache_page(struct page *page); -#define flush_dcache_mmap_lock(mapping) do { } while (0) -#define flush_dcache_mmap_unlock(mapping) do { } while (0) void flush_icache_range(unsigned long start, unsigned long stop); -extern void flush_icache_user_range(struct vm_area_struct *vma, - struct page *page, unsigned long addr, - int len); -extern void flush_dcache_icache_page(struct page *page); +#define flush_icache_range flush_icache_range + +void flush_icache_user_page(struct vm_area_struct *vma, struct page *page, + unsigned long addr, int len); +#define flush_icache_user_page flush_icache_user_page + +void flush_dcache_icache_page(struct page *page); void __flush_dcache_icache(void *page); /** @@ -111,14 +97,6 @@ static inline void invalidate_dcache_range(unsigned long start, mb(); /* sync */ } -#define copy_to_user_page(vma, page, vaddr, dst, src, len) \ - do { \ - memcpy(dst, src, len); \ - flush_icache_user_range(vma, page, vaddr, len); \ - } while (0) -#define copy_from_user_page(vma, page, vaddr, dst, src, len) \ - memcpy(dst, src, len) - -#endif /* __KERNEL__ */ +#include <asm-generic/cacheflush.h> #endif /* _ASM_POWERPC_CACHEFLUSH_H */ diff --git a/arch/powerpc/include/asm/cmpxchg.h b/arch/powerpc/include/asm/cmpxchg.h index 27183871eb3b..cf091c4c22e5 100644 --- a/arch/powerpc/include/asm/cmpxchg.h +++ b/arch/powerpc/include/asm/cmpxchg.h @@ -6,7 +6,6 @@ #include <linux/compiler.h> #include <asm/synch.h> #include <linux/bug.h> -#include <asm/asm-405.h> #ifdef __BIG_ENDIAN #define BITOFF_CAL(size, off) ((sizeof(u32) - size - off) * BITS_PER_BYTE) @@ -29,7 +28,6 @@ static inline u32 __xchg_##type##sfx(volatile void *p, u32 val) \ "1: lwarx %0,0,%3\n" \ " andc %1,%0,%5\n" \ " or %1,%1,%4\n" \ - PPC405_ERR77(0,%3) \ " stwcx. %1,0,%3\n" \ " bne- 1b\n" \ : "=&r" (prev), "=&r" (tmp), "+m" (*(u32*)p) \ @@ -60,7 +58,6 @@ u32 __cmpxchg_##type##sfx(volatile void *p, u32 old, u32 new) \ " bne- 2f\n" \ " andc %1,%0,%6\n" \ " or %1,%1,%5\n" \ - PPC405_ERR77(0,%3) \ " stwcx. %1,0,%3\n" \ " bne- 1b\n" \ br2 \ @@ -92,7 +89,6 @@ __xchg_u32_local(volatile void *p, unsigned long val) __asm__ __volatile__( "1: lwarx %0,0,%2 \n" - PPC405_ERR77(0,%2) " stwcx. %3,0,%2 \n\ bne- 1b" : "=&r" (prev), "+m" (*(volatile unsigned int *)p) @@ -109,7 +105,6 @@ __xchg_u32_relaxed(u32 *p, unsigned long val) __asm__ __volatile__( "1: lwarx %0,0,%2\n" - PPC405_ERR77(0, %2) " stwcx. %3,0,%2\n" " bne- 1b" : "=&r" (prev), "+m" (*p) @@ -127,7 +122,6 @@ __xchg_u64_local(volatile void *p, unsigned long val) __asm__ __volatile__( "1: ldarx %0,0,%2 \n" - PPC405_ERR77(0,%2) " stdcx. %3,0,%2 \n\ bne- 1b" : "=&r" (prev), "+m" (*(volatile unsigned long *)p) @@ -144,7 +138,6 @@ __xchg_u64_relaxed(u64 *p, unsigned long val) __asm__ __volatile__( "1: ldarx %0,0,%2\n" - PPC405_ERR77(0, %2) " stdcx. %3,0,%2\n" " bne- 1b" : "=&r" (prev), "+m" (*p) @@ -229,7 +222,6 @@ __cmpxchg_u32(volatile unsigned int *p, unsigned long old, unsigned long new) "1: lwarx %0,0,%2 # __cmpxchg_u32\n\ cmpw 0,%0,%3\n\ bne- 2f\n" - PPC405_ERR77(0,%2) " stwcx. %4,0,%2\n\ bne- 1b" PPC_ATOMIC_EXIT_BARRIER @@ -252,7 +244,6 @@ __cmpxchg_u32_local(volatile unsigned int *p, unsigned long old, "1: lwarx %0,0,%2 # __cmpxchg_u32\n\ cmpw 0,%0,%3\n\ bne- 2f\n" - PPC405_ERR77(0,%2) " stwcx. %4,0,%2\n\ bne- 1b" "\n\ @@ -273,7 +264,6 @@ __cmpxchg_u32_relaxed(u32 *p, unsigned long old, unsigned long new) "1: lwarx %0,0,%2 # __cmpxchg_u32_relaxed\n" " cmpw 0,%0,%3\n" " bne- 2f\n" - PPC405_ERR77(0, %2) " stwcx. %4,0,%2\n" " bne- 1b\n" "2:" @@ -301,7 +291,6 @@ __cmpxchg_u32_acquire(u32 *p, unsigned long old, unsigned long new) "1: lwarx %0,0,%2 # __cmpxchg_u32_acquire\n" " cmpw 0,%0,%3\n" " bne- 2f\n" - PPC405_ERR77(0, %2) " stwcx. %4,0,%2\n" " bne- 1b\n" PPC_ACQUIRE_BARRIER diff --git a/arch/powerpc/include/asm/code-patching.h b/arch/powerpc/include/asm/code-patching.h index 898b54262881..eacc9102c251 100644 --- a/arch/powerpc/include/asm/code-patching.h +++ b/arch/powerpc/include/asm/code-patching.h @@ -11,6 +11,7 @@ #include <linux/string.h> #include <linux/kallsyms.h> #include <asm/asm-compat.h> +#include <asm/inst.h> /* Flags for create_branch: * "b" == create_branch(addr, target, 0); @@ -22,33 +23,33 @@ #define BRANCH_ABSOLUTE 0x2 bool is_offset_in_branch_range(long offset); -unsigned int create_branch(const unsigned int *addr, - unsigned long target, int flags); -unsigned int create_cond_branch(const unsigned int *addr, - unsigned long target, int flags); -int patch_branch(unsigned int *addr, unsigned long target, int flags); -int patch_instruction(unsigned int *addr, unsigned int instr); -int raw_patch_instruction(unsigned int *addr, unsigned int instr); +int create_branch(struct ppc_inst *instr, const struct ppc_inst *addr, + unsigned long target, int flags); +int create_cond_branch(struct ppc_inst *instr, const struct ppc_inst *addr, + unsigned long target, int flags); +int patch_branch(struct ppc_inst *addr, unsigned long target, int flags); +int patch_instruction(struct ppc_inst *addr, struct ppc_inst instr); +int raw_patch_instruction(struct ppc_inst *addr, struct ppc_inst instr); static inline unsigned long patch_site_addr(s32 *site) { return (unsigned long)site + *site; } -static inline int patch_instruction_site(s32 *site, unsigned int instr) +static inline int patch_instruction_site(s32 *site, struct ppc_inst instr) { - return patch_instruction((unsigned int *)patch_site_addr(site), instr); + return patch_instruction((struct ppc_inst *)patch_site_addr(site), instr); } static inline int patch_branch_site(s32 *site, unsigned long target, int flags) { - return patch_branch((unsigned int *)patch_site_addr(site), target, flags); + return patch_branch((struct ppc_inst *)patch_site_addr(site), target, flags); } static inline int modify_instruction(unsigned int *addr, unsigned int clr, unsigned int set) { - return patch_instruction(addr, (*addr & ~clr) | set); + return patch_instruction((struct ppc_inst *)addr, ppc_inst((*addr & ~clr) | set)); } static inline int modify_instruction_site(s32 *site, unsigned int clr, unsigned int set) @@ -56,13 +57,13 @@ static inline int modify_instruction_site(s32 *site, unsigned int clr, unsigned return modify_instruction((unsigned int *)patch_site_addr(site), clr, set); } -int instr_is_relative_branch(unsigned int instr); -int instr_is_relative_link_branch(unsigned int instr); -int instr_is_branch_to_addr(const unsigned int *instr, unsigned long addr); -unsigned long branch_target(const unsigned int *instr); -unsigned int translate_branch(const unsigned int *dest, - const unsigned int *src); -extern bool is_conditional_branch(unsigned int instr); +int instr_is_relative_branch(struct ppc_inst instr); +int instr_is_relative_link_branch(struct ppc_inst instr); +int instr_is_branch_to_addr(const struct ppc_inst *instr, unsigned long addr); +unsigned long branch_target(const struct ppc_inst *instr); +int translate_branch(struct ppc_inst *instr, const struct ppc_inst *dest, + const struct ppc_inst *src); +extern bool is_conditional_branch(struct ppc_inst instr); #ifdef CONFIG_PPC_BOOK3E_64 void __patch_exception(int exc, unsigned long addr); #define patch_exception(exc, name) do { \ diff --git a/arch/powerpc/include/asm/cputable.h b/arch/powerpc/include/asm/cputable.h index 40a4d3c6fd99..bac2252c839e 100644 --- a/arch/powerpc/include/asm/cputable.h +++ b/arch/powerpc/include/asm/cputable.h @@ -213,6 +213,7 @@ static inline void cpu_feature_keys_init(void) { } #define CPU_FTR_P9_TIDR LONG_ASM_CONST(0x0000800000000000) #define CPU_FTR_P9_TLBIE_ERAT_BUG LONG_ASM_CONST(0x0001000000000000) #define CPU_FTR_P9_RADIX_PREFETCH_BUG LONG_ASM_CONST(0x0002000000000000) +#define CPU_FTR_ARCH_31 LONG_ASM_CONST(0x0004000000000000) #ifndef __ASSEMBLY__ @@ -467,6 +468,17 @@ static inline void cpu_feature_keys_init(void) { } #define CPU_FTRS_POWER9_DD2_2 (CPU_FTRS_POWER9 | CPU_FTR_POWER9_DD2_1 | \ CPU_FTR_P9_TM_HV_ASSIST | \ CPU_FTR_P9_TM_XER_SO_BUG) +#define CPU_FTRS_POWER10 (CPU_FTR_LWSYNC | \ + CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | CPU_FTR_ARCH_206 |\ + CPU_FTR_MMCRA | CPU_FTR_SMT | \ + CPU_FTR_COHERENT_ICACHE | \ + CPU_FTR_PURR | CPU_FTR_SPURR | CPU_FTR_REAL_LE | \ + CPU_FTR_DSCR | CPU_FTR_SAO | \ + CPU_FTR_STCX_CHECKS_ADDRESS | CPU_FTR_POPCNTB | CPU_FTR_POPCNTD | \ + CPU_FTR_CFAR | CPU_FTR_HVMODE | CPU_FTR_VMX_COPY | \ + CPU_FTR_DBELL | CPU_FTR_HAS_PPR | CPU_FTR_ARCH_207S | \ + CPU_FTR_TM_COMP | CPU_FTR_ARCH_300 | CPU_FTR_PKEY | \ + CPU_FTR_ARCH_31) #define CPU_FTRS_CELL (CPU_FTR_LWSYNC | \ CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | \ CPU_FTR_ALTIVEC_COMP | CPU_FTR_MMCRA | CPU_FTR_SMT | \ @@ -485,14 +497,14 @@ static inline void cpu_feature_keys_init(void) { } #define CPU_FTRS_POSSIBLE \ (CPU_FTRS_POWER7 | CPU_FTRS_POWER8E | CPU_FTRS_POWER8 | \ CPU_FTR_ALTIVEC_COMP | CPU_FTR_VSX_COMP | CPU_FTRS_POWER9 | \ - CPU_FTRS_POWER9_DD2_1 | CPU_FTRS_POWER9_DD2_2) + CPU_FTRS_POWER9_DD2_1 | CPU_FTRS_POWER9_DD2_2 | CPU_FTRS_POWER10) #else #define CPU_FTRS_POSSIBLE \ (CPU_FTRS_PPC970 | CPU_FTRS_POWER5 | \ CPU_FTRS_POWER6 | CPU_FTRS_POWER7 | CPU_FTRS_POWER8E | \ CPU_FTRS_POWER8 | CPU_FTRS_CELL | CPU_FTRS_PA6T | \ CPU_FTR_VSX_COMP | CPU_FTR_ALTIVEC_COMP | CPU_FTRS_POWER9 | \ - CPU_FTRS_POWER9_DD2_1 | CPU_FTRS_POWER9_DD2_2) + CPU_FTRS_POWER9_DD2_1 | CPU_FTRS_POWER9_DD2_2 | CPU_FTRS_POWER10) #endif /* CONFIG_CPU_LITTLE_ENDIAN */ #endif #else @@ -614,7 +626,11 @@ enum { }; #endif /* __powerpc64__ */ -#define HBP_NUM 1 +/* + * Maximum number of hw breakpoint supported on powerpc. Number of + * breakpoints supported by actual hw might be less than this. + */ +#define HBP_NUM_MAX 1 #endif /* !__ASSEMBLY__ */ diff --git a/arch/powerpc/include/asm/debug.h b/arch/powerpc/include/asm/debug.h index 7756026b95ca..ec57daf87f40 100644 --- a/arch/powerpc/include/asm/debug.h +++ b/arch/powerpc/include/asm/debug.h @@ -45,7 +45,7 @@ static inline int debugger_break_match(struct pt_regs *regs) { return 0; } static inline int debugger_fault_handler(struct pt_regs *regs) { return 0; } #endif -void __set_breakpoint(struct arch_hw_breakpoint *brk); +void __set_breakpoint(int nr, struct arch_hw_breakpoint *brk); bool ppc_breakpoint_available(void); #ifdef CONFIG_PPC_ADV_DEBUG_REGS extern void do_send_trap(struct pt_regs *regs, unsigned long address, diff --git a/arch/powerpc/include/asm/drmem.h b/arch/powerpc/include/asm/drmem.h index 28c3d936fdf3..414d209f45bb 100644 --- a/arch/powerpc/include/asm/drmem.h +++ b/arch/powerpc/include/asm/drmem.h @@ -65,6 +65,7 @@ struct of_drconf_cell_v2 { #define DRCONF_MEM_ASSIGNED 0x00000008 #define DRCONF_MEM_AI_INVALID 0x00000040 #define DRCONF_MEM_RESERVED 0x00000080 +#define DRCONF_MEM_HOTREMOVABLE 0x00000100 static inline u32 drmem_lmb_size(void) { diff --git a/arch/powerpc/include/asm/fadump-internal.h b/arch/powerpc/include/asm/fadump-internal.h index c814a2b55389..8d61c8f3fec4 100644 --- a/arch/powerpc/include/asm/fadump-internal.h +++ b/arch/powerpc/include/asm/fadump-internal.h @@ -64,12 +64,14 @@ struct fadump_memory_range { }; /* fadump memory ranges info */ +#define RNG_NAME_SZ 16 struct fadump_mrange_info { - char name[16]; + char name[RNG_NAME_SZ]; struct fadump_memory_range *mem_ranges; u32 mem_ranges_sz; u32 mem_range_cnt; u32 max_mem_ranges; + bool is_static; }; /* Platform specific callback functions */ diff --git a/arch/powerpc/include/asm/firmware.h b/arch/powerpc/include/asm/firmware.h index ca33f4ef6cb4..6003c2e533a0 100644 --- a/arch/powerpc/include/asm/firmware.h +++ b/arch/powerpc/include/asm/firmware.h @@ -128,6 +128,7 @@ extern void machine_check_fwnmi(void); /* This is true if we are using the firmware NMI handler (typically LPAR) */ extern int fwnmi_active; +extern int ibm_nmi_interlock_token; extern unsigned int __start___fw_ftr_fixup, __stop___fw_ftr_fixup; diff --git a/arch/powerpc/include/asm/fixmap.h b/arch/powerpc/include/asm/fixmap.h index 2ef155a3c821..29188810ba30 100644 --- a/arch/powerpc/include/asm/fixmap.h +++ b/arch/powerpc/include/asm/fixmap.h @@ -16,8 +16,8 @@ #ifndef __ASSEMBLY__ #include <linux/sizes.h> +#include <linux/pgtable.h> #include <asm/page.h> -#include <asm/pgtable.h> #ifdef CONFIG_HIGHMEM #include <linux/threads.h> #include <asm/kmap_types.h> @@ -86,6 +86,10 @@ enum fixed_addresses { #define __FIXADDR_SIZE (__end_of_fixed_addresses << PAGE_SHIFT) #define FIXADDR_START (FIXADDR_TOP - __FIXADDR_SIZE) +#define FIXMAP_ALIGNED_SIZE (ALIGN(FIXADDR_TOP, PGDIR_SIZE) - \ + ALIGN_DOWN(FIXADDR_START, PGDIR_SIZE)) +#define FIXMAP_PTE_SIZE (FIXMAP_ALIGNED_SIZE / PGDIR_SIZE * PTE_TABLE_SIZE) + #define FIXMAP_PAGE_NOCACHE PAGE_KERNEL_NCG #define FIXMAP_PAGE_IO PAGE_KERNEL_NCG diff --git a/arch/powerpc/include/asm/floppy.h b/arch/powerpc/include/asm/floppy.h index 167c44b58848..7af9a68fd949 100644 --- a/arch/powerpc/include/asm/floppy.h +++ b/arch/powerpc/include/asm/floppy.h @@ -13,8 +13,8 @@ #include <asm/machdep.h> -#define fd_inb(port) inb_p(port) -#define fd_outb(value,port) outb_p(value,port) +#define fd_inb(base, reg) inb_p((base) + (reg)) +#define fd_outb(value, base, reg) outb_p(value, (base) + (reg)) #define fd_enable_dma() enable_dma(FLOPPY_DMA) #define fd_disable_dma() fd_ops->_disable_dma(FLOPPY_DMA) @@ -61,21 +61,22 @@ static irqreturn_t floppy_hardint(int irq, void *dev_id) st = 1; for (lcount=virtual_dma_count, lptr=virtual_dma_addr; lcount; lcount--, lptr++) { - st=inb(virtual_dma_port+4) & 0xa0 ; - if (st != 0xa0) + st = inb(virtual_dma_port + FD_STATUS); + st &= STATUS_DMA | STATUS_READY; + if (st != (STATUS_DMA | STATUS_READY)) break; if (virtual_dma_mode) - outb_p(*lptr, virtual_dma_port+5); + outb_p(*lptr, virtual_dma_port + FD_DATA); else - *lptr = inb_p(virtual_dma_port+5); + *lptr = inb_p(virtual_dma_port + FD_DATA); } virtual_dma_count = lcount; virtual_dma_addr = lptr; - st = inb(virtual_dma_port+4); + st = inb(virtual_dma_port + FD_STATUS); - if (st == 0x20) + if (st == STATUS_DMA) return IRQ_HANDLED; - if (!(st & 0x20)) { + if (!(st & STATUS_DMA)) { virtual_dma_residue += virtual_dma_count; virtual_dma_count=0; doing_vdma = 0; diff --git a/arch/powerpc/include/asm/ftrace.h b/arch/powerpc/include/asm/ftrace.h index f54a08a2cd70..bc76970b6ee5 100644 --- a/arch/powerpc/include/asm/ftrace.h +++ b/arch/powerpc/include/asm/ftrace.h @@ -108,9 +108,23 @@ static inline void this_cpu_enable_ftrace(void) { get_paca()->ftrace_enabled = 1; } + +/* Disable ftrace on this CPU if possible (may not be implemented) */ +static inline void this_cpu_set_ftrace_enabled(u8 ftrace_enabled) +{ + get_paca()->ftrace_enabled = ftrace_enabled; +} + +static inline u8 this_cpu_get_ftrace_enabled(void) +{ + return get_paca()->ftrace_enabled; +} + #else /* CONFIG_PPC64 */ static inline void this_cpu_disable_ftrace(void) { } static inline void this_cpu_enable_ftrace(void) { } +static inline void this_cpu_set_ftrace_enabled(u8 ftrace_enabled) { } +static inline u8 this_cpu_get_ftrace_enabled(void) { return 1; } #endif /* CONFIG_PPC64 */ #endif /* !__ASSEMBLY__ */ diff --git a/arch/powerpc/include/asm/futex.h b/arch/powerpc/include/asm/futex.h index f187bb5e524e..e93ee3202e4c 100644 --- a/arch/powerpc/include/asm/futex.h +++ b/arch/powerpc/include/asm/futex.h @@ -8,14 +8,12 @@ #include <linux/uaccess.h> #include <asm/errno.h> #include <asm/synch.h> -#include <asm/asm-405.h> #define __futex_atomic_op(insn, ret, oldval, uaddr, oparg) \ __asm__ __volatile ( \ PPC_ATOMIC_ENTRY_BARRIER \ "1: lwarx %0,0,%2\n" \ insn \ - PPC405_ERR77(0, %2) \ "2: stwcx. %1,0,%2\n" \ "bne- 1b\n" \ PPC_ATOMIC_EXIT_BARRIER \ @@ -82,7 +80,6 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr, "1: lwarx %1,0,%3 # futex_atomic_cmpxchg_inatomic\n\ cmpw 0,%1,%4\n\ bne- 3f\n" - PPC405_ERR77(0,%3) "2: stwcx. %5,0,%3\n\ bne- 1b\n" PPC_ATOMIC_EXIT_BARRIER diff --git a/arch/powerpc/include/asm/highmem.h b/arch/powerpc/include/asm/highmem.h index a4b65b186ec6..104026f7d6bc 100644 --- a/arch/powerpc/include/asm/highmem.h +++ b/arch/powerpc/include/asm/highmem.h @@ -30,7 +30,6 @@ #include <asm/fixmap.h> extern pte_t *kmap_pte; -extern pgprot_t kmap_prot; extern pte_t *pkmap_page_table; /* @@ -59,33 +58,6 @@ extern pte_t *pkmap_page_table; #define PKMAP_NR(virt) ((virt-PKMAP_BASE) >> PAGE_SHIFT) #define PKMAP_ADDR(nr) (PKMAP_BASE + ((nr) << PAGE_SHIFT)) -extern void *kmap_high(struct page *page); -extern void kunmap_high(struct page *page); -extern void *kmap_atomic_prot(struct page *page, pgprot_t prot); -extern void __kunmap_atomic(void *kvaddr); - -static inline void *kmap(struct page *page) -{ - might_sleep(); - if (!PageHighMem(page)) - return page_address(page); - return kmap_high(page); -} - -static inline void kunmap(struct page *page) -{ - BUG_ON(in_interrupt()); - if (!PageHighMem(page)) - return; - kunmap_high(page); -} - -static inline void *kmap_atomic(struct page *page) -{ - return kmap_atomic_prot(page, kmap_prot); -} - - #define flush_cache_kmaps() flush_cache_all() #endif /* __KERNEL__ */ diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h index bd6504c28c2f..551a9d4d3958 100644 --- a/arch/powerpc/include/asm/hugetlb.h +++ b/arch/powerpc/include/asm/hugetlb.h @@ -30,6 +30,7 @@ static inline int is_hugepage_only_range(struct mm_struct *mm, return slice_is_hugepage_only_range(mm, addr, len); return 0; } +#define is_hugepage_only_range is_hugepage_only_range #define __HAVE_ARCH_HUGETLB_FREE_PGD_RANGE void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr, @@ -40,11 +41,7 @@ void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr, static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep) { -#ifdef CONFIG_PPC64 return __pte(pte_update(mm, addr, ptep, ~0UL, 0, 1)); -#else - return __pte(pte_update(ptep, ~0UL, 0)); -#endif } #define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH @@ -60,10 +57,6 @@ int huge_ptep_set_access_flags(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep, pte_t pte, int dirty); -static inline void arch_clear_hugepage_flags(struct page *page) -{ -} - #include <asm-generic/hugetlb.h> #else /* ! CONFIG_HUGETLB_PAGE */ diff --git a/arch/powerpc/include/asm/hw_breakpoint.h b/arch/powerpc/include/asm/hw_breakpoint.h index f2f8d8aa8e3b..cb424799da0d 100644 --- a/arch/powerpc/include/asm/hw_breakpoint.h +++ b/arch/powerpc/include/asm/hw_breakpoint.h @@ -34,15 +34,21 @@ struct arch_hw_breakpoint { #define HW_BRK_TYPE_PRIV_ALL (HW_BRK_TYPE_USER | HW_BRK_TYPE_KERNEL | \ HW_BRK_TYPE_HYP) +/* Minimum granularity */ #ifdef CONFIG_PPC_8xx -#define HW_BREAKPOINT_ALIGN 0x3 +#define HW_BREAKPOINT_SIZE 0x4 #else -#define HW_BREAKPOINT_ALIGN 0x7 +#define HW_BREAKPOINT_SIZE 0x8 #endif #define DABR_MAX_LEN 8 #define DAWR_MAX_LEN 512 +static inline int nr_wp_slots(void) +{ + return HBP_NUM_MAX; +} + #ifdef CONFIG_HAVE_HW_BREAKPOINT #include <linux/kdebug.h> #include <asm/reg.h> @@ -64,7 +70,6 @@ extern int hw_breakpoint_exceptions_notify(struct notifier_block *unused, unsigned long val, void *data); int arch_install_hw_breakpoint(struct perf_event *bp); void arch_uninstall_hw_breakpoint(struct perf_event *bp); -void arch_unregister_hw_breakpoint(struct perf_event *bp); void hw_breakpoint_pmu_read(struct perf_event *bp); extern void flush_ptrace_hw_breakpoint(struct task_struct *tsk); @@ -73,14 +78,14 @@ extern void ptrace_triggered(struct perf_event *bp, struct perf_sample_data *data, struct pt_regs *regs); static inline void hw_breakpoint_disable(void) { - struct arch_hw_breakpoint brk; - - brk.address = 0; - brk.type = 0; - brk.len = 0; - brk.hw_len = 0; - if (ppc_breakpoint_available()) - __set_breakpoint(&brk); + int i; + struct arch_hw_breakpoint null_brk = {0}; + + if (!ppc_breakpoint_available()) + return; + + for (i = 0; i < nr_wp_slots(); i++) + __set_breakpoint(i, &null_brk); } extern void thread_change_pc(struct task_struct *tsk, struct pt_regs *regs); int hw_breakpoint_handler(struct die_args *args); @@ -99,10 +104,10 @@ static inline bool dawr_enabled(void) { return dawr_force_enable; } -int set_dawr(struct arch_hw_breakpoint *brk); +int set_dawr(int nr, struct arch_hw_breakpoint *brk); #else static inline bool dawr_enabled(void) { return false; } -static inline int set_dawr(struct arch_hw_breakpoint *brk) { return -1; } +static inline int set_dawr(int nr, struct arch_hw_breakpoint *brk) { return -1; } #endif #endif /* __KERNEL__ */ diff --git a/arch/powerpc/include/asm/hw_irq.h b/arch/powerpc/include/asm/hw_irq.h index e0e71777961f..3a0db7b0b46e 100644 --- a/arch/powerpc/include/asm/hw_irq.h +++ b/arch/powerpc/include/asm/hw_irq.h @@ -250,9 +250,27 @@ static inline bool arch_irqs_disabled(void) } \ } while(0) +static inline bool __lazy_irq_pending(u8 irq_happened) +{ + return !!(irq_happened & ~PACA_IRQ_HARD_DIS); +} + +/* + * Check if a lazy IRQ is pending. Should be called with IRQs hard disabled. + */ static inline bool lazy_irq_pending(void) { - return !!(get_paca()->irq_happened & ~PACA_IRQ_HARD_DIS); + return __lazy_irq_pending(get_paca()->irq_happened); +} + +/* + * Check if a lazy IRQ is pending, with no debugging checks. + * Should be called with IRQs hard disabled. + * For use in RI disabled code or other constrained situations. + */ +static inline bool lazy_irq_pending_nocheck(void) +{ + return __lazy_irq_pending(local_paca->irq_happened); } /* diff --git a/arch/powerpc/include/asm/icswx.h b/arch/powerpc/include/asm/icswx.h index 9872f85d356f..965b1f39b2a5 100644 --- a/arch/powerpc/include/asm/icswx.h +++ b/arch/powerpc/include/asm/icswx.h @@ -108,6 +108,17 @@ struct data_descriptor_entry { __be64 address; } __packed __aligned(DDE_ALIGN); +/* 4.3.2 NX-stamped Fault CRB */ + +#define NX_STAMP_ALIGN (0x10) + +struct nx_fault_stamp { + __be64 fault_storage_addr; + __be16 reserved; + __u8 flags; + __u8 fault_status; + __be32 pswid; +} __packed __aligned(NX_STAMP_ALIGN); /* Chapter 6.5.2 Coprocessor-Request Block (CRB) */ @@ -135,10 +146,15 @@ struct coprocessor_request_block { struct coprocessor_completion_block ccb; - u8 reserved[48]; + union { + struct nx_fault_stamp nx; + u8 reserved[16]; + } stamp; + + u8 reserved[32]; struct coprocessor_status_block csb; -} __packed __aligned(CRB_ALIGN); +} __packed; /* RFC02167 Initiate Coprocessor Instructions document diff --git a/arch/powerpc/include/asm/idle.h b/arch/powerpc/include/asm/idle.h new file mode 100644 index 000000000000..accd1f50085a --- /dev/null +++ b/arch/powerpc/include/asm/idle.h @@ -0,0 +1,93 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +#ifndef _ASM_POWERPC_IDLE_H +#define _ASM_POWERPC_IDLE_H +#include <asm/runlatch.h> +#include <asm/paca.h> + +#ifdef CONFIG_PPC_PSERIES +DECLARE_PER_CPU(u64, idle_spurr_cycles); +DECLARE_PER_CPU(u64, idle_entry_purr_snap); +DECLARE_PER_CPU(u64, idle_entry_spurr_snap); + +static inline void snapshot_purr_idle_entry(void) +{ + *this_cpu_ptr(&idle_entry_purr_snap) = mfspr(SPRN_PURR); +} + +static inline void snapshot_spurr_idle_entry(void) +{ + *this_cpu_ptr(&idle_entry_spurr_snap) = mfspr(SPRN_SPURR); +} + +static inline void update_idle_purr_accounting(void) +{ + u64 wait_cycles; + u64 in_purr = *this_cpu_ptr(&idle_entry_purr_snap); + + wait_cycles = be64_to_cpu(get_lppaca()->wait_state_cycles); + wait_cycles += mfspr(SPRN_PURR) - in_purr; + get_lppaca()->wait_state_cycles = cpu_to_be64(wait_cycles); +} + +static inline void update_idle_spurr_accounting(void) +{ + u64 *idle_spurr_cycles_ptr = this_cpu_ptr(&idle_spurr_cycles); + u64 in_spurr = *this_cpu_ptr(&idle_entry_spurr_snap); + + *idle_spurr_cycles_ptr += mfspr(SPRN_SPURR) - in_spurr; +} + +static inline void pseries_idle_prolog(void) +{ + ppc64_runlatch_off(); + snapshot_purr_idle_entry(); + snapshot_spurr_idle_entry(); + /* + * Indicate to the HV that we are idle. Now would be + * a good time to find other work to dispatch. + */ + get_lppaca()->idle = 1; +} + +static inline void pseries_idle_epilog(void) +{ + update_idle_purr_accounting(); + update_idle_spurr_accounting(); + get_lppaca()->idle = 0; + ppc64_runlatch_on(); +} + +static inline u64 read_this_idle_purr(void) +{ + /* + * If we are reading from an idle context, update the + * idle-purr cycles corresponding to the last idle period. + * Since the idle context is not yet over, take a fresh + * snapshot of the idle-purr. + */ + if (unlikely(get_lppaca()->idle == 1)) { + update_idle_purr_accounting(); + snapshot_purr_idle_entry(); + } + + return be64_to_cpu(get_lppaca()->wait_state_cycles); +} + +static inline u64 read_this_idle_spurr(void) +{ + /* + * If we are reading from an idle context, update the + * idle-spurr cycles corresponding to the last idle period. + * Since the idle context is not yet over, take a fresh + * snapshot of the idle-spurr. + */ + if (get_lppaca()->idle == 1) { + update_idle_spurr_accounting(); + snapshot_spurr_idle_entry(); + } + + return *this_cpu_ptr(&idle_spurr_cycles); +} + +#endif /* CONFIG_PPC_PSERIES */ +#endif diff --git a/arch/powerpc/include/asm/inst.h b/arch/powerpc/include/asm/inst.h new file mode 100644 index 000000000000..45f3ec868258 --- /dev/null +++ b/arch/powerpc/include/asm/inst.h @@ -0,0 +1,131 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +#ifndef _ASM_POWERPC_INST_H +#define _ASM_POWERPC_INST_H + +#include <asm/ppc-opcode.h> + +/* + * Instruction data type for POWER + */ + +struct ppc_inst { + u32 val; +#ifdef CONFIG_PPC64 + u32 suffix; +#endif +} __packed; + +static inline u32 ppc_inst_val(struct ppc_inst x) +{ + return x.val; +} + +static inline int ppc_inst_primary_opcode(struct ppc_inst x) +{ + return ppc_inst_val(x) >> 26; +} + +#ifdef CONFIG_PPC64 +#define ppc_inst(x) ((struct ppc_inst){ .val = (x), .suffix = 0xff }) + +#define ppc_inst_prefix(x, y) ((struct ppc_inst){ .val = (x), .suffix = (y) }) + +static inline u32 ppc_inst_suffix(struct ppc_inst x) +{ + return x.suffix; +} + +static inline bool ppc_inst_prefixed(struct ppc_inst x) +{ + return (ppc_inst_primary_opcode(x) == 1) && ppc_inst_suffix(x) != 0xff; +} + +static inline struct ppc_inst ppc_inst_swab(struct ppc_inst x) +{ + return ppc_inst_prefix(swab32(ppc_inst_val(x)), + swab32(ppc_inst_suffix(x))); +} + +static inline struct ppc_inst ppc_inst_read(const struct ppc_inst *ptr) +{ + u32 val, suffix; + + val = *(u32 *)ptr; + if ((val >> 26) == OP_PREFIX) { + suffix = *((u32 *)ptr + 1); + return ppc_inst_prefix(val, suffix); + } else { + return ppc_inst(val); + } +} + +static inline bool ppc_inst_equal(struct ppc_inst x, struct ppc_inst y) +{ + return *(u64 *)&x == *(u64 *)&y; +} + +#else + +#define ppc_inst(x) ((struct ppc_inst){ .val = x }) + +static inline bool ppc_inst_prefixed(struct ppc_inst x) +{ + return false; +} + +static inline u32 ppc_inst_suffix(struct ppc_inst x) +{ + return 0; +} + +static inline struct ppc_inst ppc_inst_swab(struct ppc_inst x) +{ + return ppc_inst(swab32(ppc_inst_val(x))); +} + +static inline struct ppc_inst ppc_inst_read(const struct ppc_inst *ptr) +{ + return *ptr; +} + +static inline bool ppc_inst_equal(struct ppc_inst x, struct ppc_inst y) +{ + return ppc_inst_val(x) == ppc_inst_val(y); +} + +#endif /* CONFIG_PPC64 */ + +static inline int ppc_inst_len(struct ppc_inst x) +{ + return ppc_inst_prefixed(x) ? 8 : 4; +} + +/* + * Return the address of the next instruction, if the instruction @value was + * located at @location. + */ +static inline struct ppc_inst *ppc_inst_next(void *location, struct ppc_inst *value) +{ + struct ppc_inst tmp; + + tmp = ppc_inst_read(value); + + return location + ppc_inst_len(tmp); +} + +static inline u64 ppc_inst_as_u64(struct ppc_inst x) +{ +#ifdef CONFIG_CPU_LITTLE_ENDIAN + return (u64)ppc_inst_suffix(x) << 32 | ppc_inst_val(x); +#else + return (u64)ppc_inst_val(x) << 32 | ppc_inst_suffix(x); +#endif +} + +int probe_user_read_inst(struct ppc_inst *inst, + struct ppc_inst __user *nip); + +int probe_kernel_read_inst(struct ppc_inst *inst, + struct ppc_inst *src); + +#endif /* _ASM_POWERPC_INST_H */ diff --git a/arch/powerpc/include/asm/io.h b/arch/powerpc/include/asm/io.h index 635969b5b58e..58635960403c 100644 --- a/arch/powerpc/include/asm/io.h +++ b/arch/powerpc/include/asm/io.h @@ -34,7 +34,6 @@ extern struct pci_dev *isa_bridge_pcidev; #include <asm/mmiowb.h> #include <asm/mmu.h> #include <asm/ppc_asm.h> -#include <asm/pgtable.h> #define SIO_CONFIG_RA 0x398 #define SIO_CONFIG_RD 0x399 @@ -699,10 +698,6 @@ static inline void iosync(void) * * * iounmap undoes such a mapping and can be hooked * - * * __ioremap_at (and the pending __iounmap_at) are low level functions to - * create hand-made mappings for use only by the PCI code and cannot - * currently be hooked. Must be page aligned. - * * * __ioremap_caller is the same as above but takes an explicit caller * reference rather than using __builtin_return_address(0) * @@ -719,6 +714,8 @@ void __iomem *ioremap_coherent(phys_addr_t address, unsigned long size); extern void iounmap(volatile void __iomem *addr); +void __iomem *ioremap_phb(phys_addr_t paddr, unsigned long size); + int early_ioremap_range(unsigned long ea, phys_addr_t pa, unsigned long size, pgprot_t prot); void __iomem *do_ioremap(phys_addr_t pa, phys_addr_t offset, unsigned long size, @@ -727,10 +724,6 @@ void __iomem *do_ioremap(phys_addr_t pa, phys_addr_t offset, unsigned long size, extern void __iomem *__ioremap_caller(phys_addr_t, unsigned long size, pgprot_t prot, void *caller); -extern void __iomem * __ioremap_at(phys_addr_t pa, void *ea, - unsigned long size, pgprot_t prot); -extern void __iounmap_at(void *ea, unsigned long size); - /* * When CONFIG_PPC_INDIRECT_PIO is set, we use the generic iomap implementation * which needs some additional definitions here. They basically allow PIO diff --git a/arch/powerpc/include/asm/iommu.h b/arch/powerpc/include/asm/iommu.h index 350101e11ddb..5032f1593299 100644 --- a/arch/powerpc/include/asm/iommu.h +++ b/arch/powerpc/include/asm/iommu.h @@ -22,11 +22,11 @@ #define IOMMU_PAGE_SHIFT_4K 12 #define IOMMU_PAGE_SIZE_4K (ASM_CONST(1) << IOMMU_PAGE_SHIFT_4K) #define IOMMU_PAGE_MASK_4K (~((1 << IOMMU_PAGE_SHIFT_4K) - 1)) -#define IOMMU_PAGE_ALIGN_4K(addr) _ALIGN_UP(addr, IOMMU_PAGE_SIZE_4K) +#define IOMMU_PAGE_ALIGN_4K(addr) ALIGN(addr, IOMMU_PAGE_SIZE_4K) #define IOMMU_PAGE_SIZE(tblptr) (ASM_CONST(1) << (tblptr)->it_page_shift) #define IOMMU_PAGE_MASK(tblptr) (~((1 << (tblptr)->it_page_shift) - 1)) -#define IOMMU_PAGE_ALIGN(addr, tblptr) _ALIGN_UP(addr, IOMMU_PAGE_SIZE(tblptr)) +#define IOMMU_PAGE_ALIGN(addr, tblptr) ALIGN(addr, IOMMU_PAGE_SIZE(tblptr)) /* Boot time flags */ extern int iommu_is_off; diff --git a/arch/powerpc/include/asm/kasan.h b/arch/powerpc/include/asm/kasan.h index fbff9ff9032e..be85c7005fb1 100644 --- a/arch/powerpc/include/asm/kasan.h +++ b/arch/powerpc/include/asm/kasan.h @@ -23,20 +23,20 @@ #define KASAN_SHADOW_OFFSET ASM_CONST(CONFIG_KASAN_SHADOW_OFFSET) -#define KASAN_SHADOW_END 0UL - -#define KASAN_SHADOW_SIZE (KASAN_SHADOW_END - KASAN_SHADOW_START) +#define KASAN_SHADOW_END (-(-KASAN_SHADOW_START >> KASAN_SHADOW_SCALE_SHIFT)) #ifdef CONFIG_KASAN void kasan_early_init(void); -void kasan_mmu_init(void); void kasan_init(void); void kasan_late_init(void); #else static inline void kasan_init(void) { } -static inline void kasan_mmu_init(void) { } static inline void kasan_late_init(void) { } #endif +void kasan_update_early_region(unsigned long k_start, unsigned long k_end, pte_t pte); +int kasan_init_shadow_page_tables(unsigned long k_start, unsigned long k_end); +int kasan_init_region(void *start, size_t size); + #endif /* __ASSEMBLY */ #endif diff --git a/arch/powerpc/include/asm/kprobes.h b/arch/powerpc/include/asm/kprobes.h index 66b3f2983b22..4fc0e15e23a5 100644 --- a/arch/powerpc/include/asm/kprobes.h +++ b/arch/powerpc/include/asm/kprobes.h @@ -43,7 +43,7 @@ extern kprobe_opcode_t optprobe_template_ret[]; extern kprobe_opcode_t optprobe_template_end[]; /* Fixed instruction size for powerpc */ -#define MAX_INSN_SIZE 1 +#define MAX_INSN_SIZE 2 #define MAX_OPTIMIZED_LENGTH sizeof(kprobe_opcode_t) /* 4 bytes */ #define MAX_OPTINSN_SIZE (optprobe_template_end - optprobe_template_entry) #define RELATIVEJUMP_SIZE sizeof(kprobe_opcode_t) /* 4 bytes */ diff --git a/arch/powerpc/include/asm/kup.h b/arch/powerpc/include/asm/kup.h index 92bcd1a26d73..1d0f7d838b2e 100644 --- a/arch/powerpc/include/asm/kup.h +++ b/arch/powerpc/include/asm/kup.h @@ -10,7 +10,9 @@ * Use the current saved situation instead of the to/from/size params. * Used on book3s/32 */ -#define KUAP_CURRENT 4 +#define KUAP_CURRENT_READ 4 +#define KUAP_CURRENT_WRITE 8 +#define KUAP_CURRENT (KUAP_CURRENT_READ | KUAP_CURRENT_WRITE) #ifdef CONFIG_PPC64 #include <asm/book3s/64/kup-radix.h> @@ -37,7 +39,7 @@ #else /* !__ASSEMBLY__ */ -#include <asm/pgtable.h> +#include <linux/pgtable.h> void setup_kup(void); @@ -101,6 +103,16 @@ static inline void prevent_current_access_user(void) prevent_user_access(NULL, NULL, ~0UL, KUAP_CURRENT); } +static inline void prevent_current_read_from_user(void) +{ + prevent_user_access(NULL, NULL, ~0UL, KUAP_CURRENT_READ); +} + +static inline void prevent_current_write_to_user(void) +{ + prevent_user_access(NULL, NULL, ~0UL, KUAP_CURRENT_WRITE); +} + #endif /* !__ASSEMBLY__ */ #endif /* _ASM_POWERPC_KUAP_H_ */ diff --git a/arch/powerpc/include/asm/kvm_book3s.h b/arch/powerpc/include/asm/kvm_book3s.h index 506e4df2d730..8dd24c7692a0 100644 --- a/arch/powerpc/include/asm/kvm_book3s.h +++ b/arch/powerpc/include/asm/kvm_book3s.h @@ -78,7 +78,7 @@ struct kvmppc_vcore { struct kvm_vcpu *runnable_threads[MAX_SMT_THREADS]; struct list_head preempt_list; spinlock_t lock; - struct swait_queue_head wq; + struct rcuwait wait; spinlock_t stoltb_lock; /* protects stolen_tb and preempt_tb */ u64 stolen_tb; u64 preempt_tb; @@ -198,7 +198,7 @@ extern void kvmppc_unmap_pte(struct kvm *kvm, pte_t *pte, unsigned long gpa, unsigned int shift, const struct kvm_memory_slot *memslot, unsigned int lpid); -extern bool kvmppc_hv_handle_set_rc(struct kvm *kvm, pgd_t *pgtable, +extern bool kvmppc_hv_handle_set_rc(struct kvm *kvm, bool nested, bool writing, unsigned long gpa, unsigned int lpid); extern int kvmppc_book3s_instantiate_page(struct kvm_vcpu *vcpu, diff --git a/arch/powerpc/include/asm/kvm_book3s_64.h b/arch/powerpc/include/asm/kvm_book3s_64.h index 04b2b927bb5a..9bb9bb370b53 100644 --- a/arch/powerpc/include/asm/kvm_book3s_64.h +++ b/arch/powerpc/include/asm/kvm_book3s_64.h @@ -14,6 +14,7 @@ #include <asm/book3s/64/mmu-hash.h> #include <asm/cpu_has_feature.h> #include <asm/ppc-opcode.h> +#include <asm/pte-walk.h> #ifdef CONFIG_PPC_PSERIES static inline bool kvmhv_on_pseries(void) @@ -434,7 +435,7 @@ static inline pte_t kvmppc_read_update_linux_pte(pte_t *ptep, int writing) continue; } /* If pte is not present return None */ - if (unlikely(!(pte_val(old_pte) & _PAGE_PRESENT))) + if (unlikely(!pte_present(old_pte))) return __pte(0); new_pte = pte_mkyoung(old_pte); @@ -634,6 +635,47 @@ extern void kvmhv_remove_nest_rmap_range(struct kvm *kvm, unsigned long gpa, unsigned long hpa, unsigned long nbytes); +static inline pte_t * +find_kvm_secondary_pte_unlocked(struct kvm *kvm, unsigned long ea, + unsigned *hshift) +{ + pte_t *pte; + + pte = __find_linux_pte(kvm->arch.pgtable, ea, NULL, hshift); + return pte; +} + +static inline pte_t *find_kvm_secondary_pte(struct kvm *kvm, unsigned long ea, + unsigned *hshift) +{ + pte_t *pte; + + VM_WARN(!spin_is_locked(&kvm->mmu_lock), + "%s called with kvm mmu_lock not held \n", __func__); + pte = __find_linux_pte(kvm->arch.pgtable, ea, NULL, hshift); + + return pte; +} + +static inline pte_t *find_kvm_host_pte(struct kvm *kvm, unsigned long mmu_seq, + unsigned long ea, unsigned *hshift) +{ + pte_t *pte; + + VM_WARN(!spin_is_locked(&kvm->mmu_lock), + "%s called with kvm mmu_lock not held \n", __func__); + + if (mmu_notifier_retry(kvm, mmu_seq)) + return NULL; + + pte = __find_linux_pte(kvm->mm->pgd, ea, NULL, hshift); + + return pte; +} + +extern pte_t *find_kvm_nested_guest_pte(struct kvm *kvm, unsigned long lpid, + unsigned long ea, unsigned *hshift); + #endif /* CONFIG_KVM_BOOK3S_HV_POSSIBLE */ #endif /* __ASM_KVM_BOOK3S_64_H__ */ diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h index 1dc63101ffe1..337047ba4a56 100644 --- a/arch/powerpc/include/asm/kvm_host.h +++ b/arch/powerpc/include/asm/kvm_host.h @@ -751,7 +751,7 @@ struct kvm_vcpu_arch { u8 irq_pending; /* Used by XIVE to signal pending guest irqs */ u32 last_inst; - struct swait_queue_head *wqp; + struct rcuwait *waitp; struct kvmppc_vcore *vcore; int ret; int trap; diff --git a/arch/powerpc/include/asm/mmu.h b/arch/powerpc/include/asm/mmu.h index 0699cfeeb8c9..f4ac25d4df05 100644 --- a/arch/powerpc/include/asm/mmu.h +++ b/arch/powerpc/include/asm/mmu.h @@ -122,6 +122,7 @@ #define MMU_FTRS_POWER7 MMU_FTRS_POWER6 #define MMU_FTRS_POWER8 MMU_FTRS_POWER6 #define MMU_FTRS_POWER9 MMU_FTRS_POWER6 +#define MMU_FTRS_POWER10 MMU_FTRS_POWER6 #define MMU_FTRS_CELL MMU_FTRS_DEFAULT_HPTE_ARCH_V2 | \ MMU_FTR_CI_LARGE_PAGE #define MMU_FTRS_PA6T MMU_FTRS_DEFAULT_HPTE_ARCH_V2 | \ @@ -291,15 +292,6 @@ static inline bool early_radix_enabled(void) } #endif -#ifdef CONFIG_PPC_MEM_KEYS -extern u16 get_mm_addr_key(struct mm_struct *mm, unsigned long address); -#else -static inline u16 get_mm_addr_key(struct mm_struct *mm, unsigned long address) -{ - return 0; -} -#endif /* CONFIG_PPC_MEM_KEYS */ - #ifdef CONFIG_STRICT_KERNEL_RWX static inline bool strict_kernel_rwx_enabled(void) { diff --git a/arch/powerpc/include/asm/mmu_context.h b/arch/powerpc/include/asm/mmu_context.h index 360367c579de..1a474f6b1992 100644 --- a/arch/powerpc/include/asm/mmu_context.h +++ b/arch/powerpc/include/asm/mmu_context.h @@ -185,11 +185,41 @@ static inline void mm_context_remove_copro(struct mm_struct *mm) dec_mm_active_cpus(mm); } } + +/* + * vas_windows counter shows number of open windows in the mm + * context. During context switch, use this counter to clear the + * foreign real address mapping (CP_ABORT) for the thread / process + * that intend to use COPY/PASTE. When a process closes all windows, + * disable CP_ABORT which is expensive to run. + * + * For user context, register a copro so that TLBIs are seen by the + * nest MMU. mm_context_add/remove_vas_window() are used only for user + * space windows. + */ +static inline void mm_context_add_vas_window(struct mm_struct *mm) +{ + atomic_inc(&mm->context.vas_windows); + mm_context_add_copro(mm); +} + +static inline void mm_context_remove_vas_window(struct mm_struct *mm) +{ + int v; + + mm_context_remove_copro(mm); + v = atomic_dec_if_positive(&mm->context.vas_windows); + + /* Detect imbalance between add and remove */ + WARN_ON(v < 0); +} #else static inline void inc_mm_active_cpus(struct mm_struct *mm) { } static inline void dec_mm_active_cpus(struct mm_struct *mm) { } static inline void mm_context_add_copro(struct mm_struct *mm) { } static inline void mm_context_remove_copro(struct mm_struct *mm) { } +static inline void mm_context_add_vas_windows(struct mm_struct *mm) { } +static inline void mm_context_remove_vas_windows(struct mm_struct *mm) { } #endif diff --git a/arch/powerpc/include/asm/module.h b/arch/powerpc/include/asm/module.h index 356658711a86..857d9ff24295 100644 --- a/arch/powerpc/include/asm/module.h +++ b/arch/powerpc/include/asm/module.h @@ -3,28 +3,10 @@ #define _ASM_POWERPC_MODULE_H #ifdef __KERNEL__ -/* - */ - #include <linux/list.h> #include <asm/bug.h> #include <asm-generic/module.h> - -#ifdef CONFIG_MPROFILE_KERNEL -#define MODULE_ARCH_VERMAGIC_FTRACE "mprofile-kernel " -#else -#define MODULE_ARCH_VERMAGIC_FTRACE "" -#endif - -#ifdef CONFIG_RELOCATABLE -#define MODULE_ARCH_VERMAGIC_RELOCATABLE "relocatable " -#else -#define MODULE_ARCH_VERMAGIC_RELOCATABLE "" -#endif - -#define MODULE_ARCH_VERMAGIC MODULE_ARCH_VERMAGIC_FTRACE MODULE_ARCH_VERMAGIC_RELOCATABLE - #ifndef __powerpc64__ /* * Thanks to Paul M for explaining this. @@ -90,12 +72,9 @@ struct mod_arch_specific { # ifdef MODULE asm(".section .ftrace.tramp,\"ax\",@nobits; .align 3; .previous"); # endif /* MODULE */ -#endif int module_trampoline_target(struct module *mod, unsigned long trampoline, unsigned long *target); - -#ifdef CONFIG_DYNAMIC_FTRACE int module_finalize_ftrace(struct module *mod, const Elf_Shdr *sechdrs); #else static inline int module_finalize_ftrace(struct module *mod, const Elf_Shdr *sechdrs) diff --git a/arch/powerpc/include/asm/nohash/32/hugetlb-8xx.h b/arch/powerpc/include/asm/nohash/32/hugetlb-8xx.h index a46616937d20..e752a5807a59 100644 --- a/arch/powerpc/include/asm/nohash/32/hugetlb-8xx.h +++ b/arch/powerpc/include/asm/nohash/32/hugetlb-8xx.h @@ -13,13 +13,13 @@ static inline pte_t *hugepd_page(hugepd_t hpd) static inline unsigned int hugepd_shift(hugepd_t hpd) { - return ((hpd_val(hpd) & _PMD_PAGE_MASK) >> 1) + 17; + return PAGE_SHIFT_8M; } static inline pte_t *hugepte_offset(hugepd_t hpd, unsigned long addr, unsigned int pdshift) { - unsigned long idx = (addr & ((1UL << pdshift) - 1)) >> PAGE_SHIFT; + unsigned long idx = (addr & (SZ_4M - 1)) >> PAGE_SHIFT; return hugepd_page(hpd) + idx; } @@ -32,8 +32,12 @@ static inline void flush_hugetlb_page(struct vm_area_struct *vma, static inline void hugepd_populate(hugepd_t *hpdp, pte_t *new, unsigned int pshift) { - *hpdp = __hugepd(__pa(new) | _PMD_USER | _PMD_PRESENT | - (pshift == PAGE_SHIFT_8M ? _PMD_PAGE_8M : _PMD_PAGE_512K)); + *hpdp = __hugepd(__pa(new) | _PMD_USER | _PMD_PRESENT | _PMD_PAGE_8M); +} + +static inline void hugepd_populate_kernel(hugepd_t *hpdp, pte_t *new, unsigned int pshift) +{ + *hpdp = __hugepd(__pa(new) | _PMD_PRESENT | _PMD_PAGE_8M); } static inline int check_and_get_huge_psize(int shift) @@ -41,4 +45,24 @@ static inline int check_and_get_huge_psize(int shift) return shift_to_mmu_psize(shift); } +#define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT +void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_t pte); + +#define __HAVE_ARCH_HUGE_PTE_CLEAR +static inline void huge_pte_clear(struct mm_struct *mm, unsigned long addr, + pte_t *ptep, unsigned long sz) +{ + pte_update(mm, addr, ptep, ~0UL, 0, 1); +} + +#define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT +static inline void huge_ptep_set_wrprotect(struct mm_struct *mm, + unsigned long addr, pte_t *ptep) +{ + unsigned long clr = ~pte_val(pte_wrprotect(__pte(~0))); + unsigned long set = pte_val(pte_wrprotect(__pte(0))); + + pte_update(mm, addr, ptep, clr, set, 1); +} + #endif /* _ASM_POWERPC_NOHASH_32_HUGETLB_8XX_H */ diff --git a/arch/powerpc/include/asm/nohash/32/mmu-8xx.h b/arch/powerpc/include/asm/nohash/32/mmu-8xx.h index 76af5b0cb16e..1d9ac0f9c794 100644 --- a/arch/powerpc/include/asm/nohash/32/mmu-8xx.h +++ b/arch/powerpc/include/asm/nohash/32/mmu-8xx.h @@ -19,7 +19,6 @@ #define MI_RSV4I 0x08000000 /* Reserve 4 TLB entries */ #define MI_PPCS 0x02000000 /* Use MI_RPN prob/priv state */ #define MI_IDXMASK 0x00001f00 /* TLB index to be loaded */ -#define MI_RESETVAL 0x00000000 /* Value of register at reset */ /* These are the Ks and Kp from the PowerPC books. For proper operation, * Ks = 0, Kp = 1. @@ -37,16 +36,16 @@ * Therefore, we define 2 APG groups. lsb is _PMD_USER * 0 => Kernel => 01 (all accesses performed according to page definition) * 1 => User => 00 (all accesses performed as supervisor iaw page definition) - * 2-16 => NA => 11 (all accesses performed as user iaw page definition) + * 2-15 => Not Used */ -#define MI_APG_INIT 0x4fffffff +#define MI_APG_INIT 0x40000000 /* * 0 => Kernel => 01 (all accesses performed according to page definition) * 1 => User => 10 (all accesses performed according to swaped page definition) - * 2-16 => NA => 11 (all accesses performed as user iaw page definition) + * 2-15 => Not Used */ -#define MI_APG_KUEP 0x6fffffff +#define MI_APG_KUEP 0x60000000 /* The effective page number register. When read, contains the information * about the last instruction TLB miss. When MI_RPN is written, bits in @@ -95,7 +94,6 @@ #define MD_TWAM 0x04000000 /* Use 4K page hardware assist */ #define MD_PPCS 0x02000000 /* Use MI_RPN prob/priv state */ #define MD_IDXMASK 0x00001f00 /* TLB index to be loaded */ -#define MD_RESETVAL 0x04000000 /* Value of register at reset */ #define SPRN_M_CASID 793 /* Address space ID (context) to match */ #define MC_ASIDMASK 0x0000000f /* Bits used for ASID value */ @@ -117,16 +115,16 @@ * Therefore, we define 2 APG groups. lsb is _PMD_USER * 0 => Kernel => 01 (all accesses performed according to page definition) * 1 => User => 00 (all accesses performed as supervisor iaw page definition) - * 2-16 => NA => 11 (all accesses performed as user iaw page definition) + * 2-15 => Not Used */ -#define MD_APG_INIT 0x4fffffff +#define MD_APG_INIT 0x40000000 /* * 0 => No user => 01 (all accesses performed according to page definition) * 1 => User => 10 (all accesses performed according to swaped page definition) - * 2-16 => NA => 11 (all accesses performed as user iaw page definition) + * 2-15 => Not Used */ -#define MD_APG_KUAP 0x6fffffff +#define MD_APG_KUAP 0x60000000 /* The effective page number register. When read, contains the information * about the last instruction TLB miss. When MD_RPN is written, bits in @@ -178,12 +176,6 @@ */ #define SPRN_M_TW 799 -#ifdef CONFIG_PPC_MM_SLICES -#include <asm/nohash/32/slice.h> -#define SLICE_ARRAY_SIZE (1 << (32 - SLICE_LOW_SHIFT - 1)) -#define LOW_SLICE_ARRAY_SZ SLICE_ARRAY_SIZE -#endif - #if defined(CONFIG_PPC_4K_PAGES) #define mmu_virtual_psize MMU_PAGE_4K #elif defined(CONFIG_PPC_16K_PAGES) @@ -201,71 +193,15 @@ #include <linux/mmdebug.h> -struct slice_mask { - u64 low_slices; - DECLARE_BITMAP(high_slices, 0); -}; +void mmu_pin_tlb(unsigned long top, bool readonly); typedef struct { unsigned int id; unsigned int active; unsigned long vdso_base; -#ifdef CONFIG_PPC_MM_SLICES - u16 user_psize; /* page size index */ - unsigned char low_slices_psize[SLICE_ARRAY_SIZE]; - unsigned char high_slices_psize[0]; - unsigned long slb_addr_limit; - struct slice_mask mask_base_psize; /* 4k or 16k */ - struct slice_mask mask_512k; - struct slice_mask mask_8m; -#endif void *pte_frag; } mm_context_t; -#ifdef CONFIG_PPC_MM_SLICES -static inline u16 mm_ctx_user_psize(mm_context_t *ctx) -{ - return ctx->user_psize; -} - -static inline void mm_ctx_set_user_psize(mm_context_t *ctx, u16 user_psize) -{ - ctx->user_psize = user_psize; -} - -static inline unsigned char *mm_ctx_low_slices(mm_context_t *ctx) -{ - return ctx->low_slices_psize; -} - -static inline unsigned char *mm_ctx_high_slices(mm_context_t *ctx) -{ - return ctx->high_slices_psize; -} - -static inline unsigned long mm_ctx_slb_addr_limit(mm_context_t *ctx) -{ - return ctx->slb_addr_limit; -} - -static inline void mm_ctx_set_slb_addr_limit(mm_context_t *ctx, unsigned long limit) -{ - ctx->slb_addr_limit = limit; -} - -static inline struct slice_mask *slice_mask_for_size(mm_context_t *ctx, int psize) -{ - if (psize == MMU_PAGE_512K) - return &ctx->mask_512k; - if (psize == MMU_PAGE_8M) - return &ctx->mask_8m; - - BUG_ON(psize != mmu_virtual_psize); - - return &ctx->mask_base_psize; -} -#endif /* CONFIG_PPC_MM_SLICE */ - #define PHYS_IMMR_BASE (mfspr(SPRN_IMMR) & 0xfff80000) #define VIRT_IMMR_BASE (__fix_to_virt(FIX_IMMR_BASE)) @@ -304,13 +240,7 @@ static inline unsigned int mmu_psize_to_shift(unsigned int mmu_psize) } /* patch sites */ -extern s32 patch__itlbmiss_linmem_top, patch__itlbmiss_linmem_top8; -extern s32 patch__dtlbmiss_linmem_top, patch__dtlbmiss_immr_jmp; -extern s32 patch__fixupdar_linmem_top; -extern s32 patch__dtlbmiss_romem_top, patch__dtlbmiss_romem_top8; - -extern s32 patch__itlbmiss_exit_1, patch__itlbmiss_exit_2; -extern s32 patch__dtlbmiss_exit_1, patch__dtlbmiss_exit_2, patch__dtlbmiss_exit_3; +extern s32 patch__itlbmiss_exit_1, patch__dtlbmiss_exit_1; extern s32 patch__itlbmiss_perf, patch__dtlbmiss_perf; #endif /* !__ASSEMBLY__ */ diff --git a/arch/powerpc/include/asm/nohash/32/pgtable.h b/arch/powerpc/include/asm/nohash/32/pgtable.h index b04ba257fddb..b56f14160ae5 100644 --- a/arch/powerpc/include/asm/nohash/32/pgtable.h +++ b/arch/powerpc/include/asm/nohash/32/pgtable.h @@ -2,14 +2,12 @@ #ifndef _ASM_POWERPC_NOHASH_32_PGTABLE_H #define _ASM_POWERPC_NOHASH_32_PGTABLE_H -#define __ARCH_USE_5LEVEL_HACK #include <asm-generic/pgtable-nopmd.h> #ifndef __ASSEMBLY__ #include <linux/sched.h> #include <linux/threads.h> #include <asm/mmu.h> /* For sub-arch specific PPC_PIN_SIZE */ -#include <asm/asm-405.h> #ifdef CONFIG_44x extern int icache_44x_need_flush; @@ -30,6 +28,8 @@ extern int icache_44x_need_flush; #define PMD_TABLE_SIZE 0 #define PUD_TABLE_SIZE 0 #define PGD_TABLE_SIZE (sizeof(pgd_t) << PGD_INDEX_SIZE) + +#define PMD_MASKED_BITS (PTE_TABLE_SIZE - 1) #endif /* __ASSEMBLY__ */ #define PTRS_PER_PTE (1 << PTE_INDEX_SIZE) @@ -110,13 +110,13 @@ int map_kernel_page(unsigned long va, phys_addr_t pa, pgprot_t prot); */ #define VMALLOC_OFFSET (0x1000000) /* 16M */ #ifdef PPC_PIN_SIZE -#define VMALLOC_START (((_ALIGN((long)high_memory, PPC_PIN_SIZE) + VMALLOC_OFFSET) & ~(VMALLOC_OFFSET-1))) +#define VMALLOC_START (((ALIGN((long)high_memory, PPC_PIN_SIZE) + VMALLOC_OFFSET) & ~(VMALLOC_OFFSET-1))) #else #define VMALLOC_START ((((long)high_memory + VMALLOC_OFFSET) & ~(VMALLOC_OFFSET-1))) #endif #ifdef CONFIG_KASAN_VMALLOC -#define VMALLOC_END _ALIGN_DOWN(ioremap_bot, PAGE_SIZE << KASAN_SHADOW_SCALE_SHIFT) +#define VMALLOC_END ALIGN_DOWN(ioremap_bot, PAGE_SIZE << KASAN_SHADOW_SCALE_SHIFT) #else #define VMALLOC_END ioremap_bot #endif @@ -166,7 +166,7 @@ int map_kernel_page(unsigned long va, phys_addr_t pa, pgprot_t prot); #ifndef __ASSEMBLY__ #define pte_clear(mm, addr, ptep) \ - do { pte_update(ptep, ~0, 0); } while (0) + do { pte_update(mm, addr, ptep, ~0, 0, 0); } while (0) #ifndef pte_mkwrite static inline pte_t pte_mkwrite(pte_t pte) @@ -205,7 +205,9 @@ static inline void pmd_clear(pmd_t *pmdp) *pmdp = __pmd(0); } - +/* to find an entry in a page-table-directory */ +#define pgd_index(address) ((address) >> PGDIR_SHIFT) +#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address)) /* * PTE updates. This function is called whenever an existing @@ -221,66 +223,42 @@ static inline void pmd_clear(pmd_t *pmdp) * that an executable user mapping was modified, which is needed * to properly flush the virtually tagged instruction cache of * those implementations. + * + * On the 8xx, the page tables are a bit special. For 16k pages, we have + * 4 identical entries. For 512k pages, we have 128 entries as if it was + * 4k pages, but they are flagged as 512k pages for the hardware. + * For other page sizes, we have a single entry in the table. */ -#ifndef CONFIG_PTE_64BIT -static inline unsigned long pte_update(pte_t *p, - unsigned long clr, - unsigned long set) +#ifdef CONFIG_PPC_8xx +static inline pte_basic_t pte_update(struct mm_struct *mm, unsigned long addr, pte_t *p, + unsigned long clr, unsigned long set, int huge) { -#ifdef PTE_ATOMIC_UPDATES - unsigned long old, tmp; - - __asm__ __volatile__("\ -1: lwarx %0,0,%3\n\ - andc %1,%0,%4\n\ - or %1,%1,%5\n" - PPC405_ERR77(0,%3) -" stwcx. %1,0,%3\n\ - bne- 1b" - : "=&r" (old), "=&r" (tmp), "=m" (*p) - : "r" (p), "r" (clr), "r" (set), "m" (*p) - : "cc" ); -#else /* PTE_ATOMIC_UPDATES */ - unsigned long old = pte_val(*p); - unsigned long new = (old & ~clr) | set; - -#if defined(CONFIG_PPC_8xx) && defined(CONFIG_PPC_16K_PAGES) - p->pte = p->pte1 = p->pte2 = p->pte3 = new; -#else - *p = __pte(new); -#endif -#endif /* !PTE_ATOMIC_UPDATES */ + pte_basic_t *entry = &p->pte; + pte_basic_t old = pte_val(*p); + pte_basic_t new = (old & ~(pte_basic_t)clr) | set; + int num, i; + pmd_t *pmd = pmd_offset(pud_offset(p4d_offset(pgd_offset(mm, addr), addr), addr), addr); + + if (!huge) + num = PAGE_SIZE / SZ_4K; + else if ((pmd_val(*pmd) & _PMD_PAGE_MASK) != _PMD_PAGE_8M) + num = SZ_512K / SZ_4K; + else + num = 1; + + for (i = 0; i < num; i++, entry++, new += SZ_4K) + *entry = new; -#ifdef CONFIG_44x - if ((old & _PAGE_USER) && (old & _PAGE_EXEC)) - icache_44x_need_flush = 1; -#endif return old; } -#else /* CONFIG_PTE_64BIT */ -static inline unsigned long long pte_update(pte_t *p, - unsigned long clr, - unsigned long set) +#else +static inline pte_basic_t pte_update(struct mm_struct *mm, unsigned long addr, pte_t *p, + unsigned long clr, unsigned long set, int huge) { -#ifdef PTE_ATOMIC_UPDATES - unsigned long long old; - unsigned long tmp; - - __asm__ __volatile__("\ -1: lwarx %L0,0,%4\n\ - lwzx %0,0,%3\n\ - andc %1,%L0,%5\n\ - or %1,%1,%6\n" - PPC405_ERR77(0,%3) -" stwcx. %1,0,%4\n\ - bne- 1b" - : "=&r" (old), "=&r" (tmp), "=m" (*p) - : "r" (p), "r" ((unsigned long)(p) + 4), "r" (clr), "r" (set), "m" (*p) - : "cc" ); -#else /* PTE_ATOMIC_UPDATES */ - unsigned long long old = pte_val(*p); - *p = __pte((old & ~(unsigned long long)clr) | set); -#endif /* !PTE_ATOMIC_UPDATES */ + pte_basic_t old = pte_val(*p); + pte_basic_t new = (old & ~(pte_basic_t)clr) | set; + + *p = __pte(new); #ifdef CONFIG_44x if ((old & _PAGE_USER) && (old & _PAGE_EXEC)) @@ -288,23 +266,24 @@ static inline unsigned long long pte_update(pte_t *p, #endif return old; } -#endif /* CONFIG_PTE_64BIT */ +#endif #define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG -static inline int __ptep_test_and_clear_young(unsigned int context, unsigned long addr, pte_t *ptep) +static inline int __ptep_test_and_clear_young(struct mm_struct *mm, + unsigned long addr, pte_t *ptep) { unsigned long old; - old = pte_update(ptep, _PAGE_ACCESSED, 0); + old = pte_update(mm, addr, ptep, _PAGE_ACCESSED, 0, 0); return (old & _PAGE_ACCESSED) != 0; } #define ptep_test_and_clear_young(__vma, __addr, __ptep) \ - __ptep_test_and_clear_young((__vma)->vm_mm->context.id, __addr, __ptep) + __ptep_test_and_clear_young((__vma)->vm_mm, __addr, __ptep) #define __HAVE_ARCH_PTEP_GET_AND_CLEAR static inline pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep) { - return __pte(pte_update(ptep, ~0, 0)); + return __pte(pte_update(mm, addr, ptep, ~0, 0, 0)); } #define __HAVE_ARCH_PTEP_SET_WRPROTECT @@ -314,7 +293,7 @@ static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, unsigned long clr = ~pte_val(pte_wrprotect(__pte(~0))); unsigned long set = pte_val(pte_wrprotect(__pte(0))); - pte_update(ptep, clr, set); + pte_update(mm, addr, ptep, clr, set, 0); } static inline void __ptep_set_access_flags(struct vm_area_struct *vma, @@ -326,8 +305,9 @@ static inline void __ptep_set_access_flags(struct vm_area_struct *vma, pte_t pte_clr = pte_mkyoung(pte_mkdirty(pte_mkwrite(pte_mkexec(__pte(~0))))); unsigned long set = pte_val(entry) & pte_val(pte_set); unsigned long clr = ~pte_val(entry) & ~pte_val(pte_clr); + int huge = psize > mmu_virtual_psize ? 1 : 0; - pte_update(ptep, clr, set); + pte_update(vma->vm_mm, address, ptep, clr, set, huge); flush_tlb_page(vma, address); } @@ -348,8 +328,6 @@ static inline int pte_young(pte_t pte) * of the pte page. -- paulus */ #ifndef CONFIG_BOOKE -#define pmd_page_vaddr(pmd) \ - ((unsigned long)__va(pmd_val(pmd) & ~(PTE_TABLE_SIZE - 1))) #define pmd_page(pmd) \ pfn_to_page(pmd_val(pmd) >> PAGE_SHIFT) #else @@ -359,22 +337,6 @@ static inline int pte_young(pte_t pte) pfn_to_page((__pa(pmd_val(pmd)) >> PAGE_SHIFT)) #endif -/* to find an entry in a kernel page-table-directory */ -#define pgd_offset_k(address) pgd_offset(&init_mm, address) - -/* to find an entry in a page-table-directory */ -#define pgd_index(address) ((address) >> PGDIR_SHIFT) -#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address)) - -/* Find an entry in the third-level page table.. */ -#define pte_index(address) \ - (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)) -#define pte_offset_kernel(dir, addr) \ - (pmd_bad(*(dir)) ? NULL : (pte_t *)pmd_page_vaddr(*(dir)) + \ - pte_index(addr)) -#define pte_offset_map(dir, addr) pte_offset_kernel((dir), (addr)) -static inline void pte_unmap(pte_t *pte) { } - /* * Encode and decode a swap entry. * Note that the bits we use in a PTE for representing a swap entry diff --git a/arch/powerpc/include/asm/nohash/32/pte-40x.h b/arch/powerpc/include/asm/nohash/32/pte-40x.h index 12c6811e344b..2d3153cfc0d7 100644 --- a/arch/powerpc/include/asm/nohash/32/pte-40x.h +++ b/arch/powerpc/include/asm/nohash/32/pte-40x.h @@ -44,9 +44,8 @@ #define _PAGE_WRITETHRU 0x008 /* W: caching is write-through */ #define _PAGE_USER 0x010 /* matches one of the zone permission bits */ #define _PAGE_SPECIAL 0x020 /* software: Special page */ -#define _PAGE_RW 0x040 /* software: Writes permitted */ #define _PAGE_DIRTY 0x080 /* software: dirty page */ -#define _PAGE_HWWRITE 0x100 /* hardware: Dirty & RW, set in exception */ +#define _PAGE_RW 0x100 /* hardware: WR, anded with dirty in exception */ #define _PAGE_EXEC 0x200 /* hardware: EX permission */ #define _PAGE_ACCESSED 0x400 /* software: R: page referenced */ @@ -58,8 +57,8 @@ #define _PAGE_KERNEL_RO 0 #define _PAGE_KERNEL_ROX _PAGE_EXEC -#define _PAGE_KERNEL_RW (_PAGE_DIRTY | _PAGE_RW | _PAGE_HWWRITE) -#define _PAGE_KERNEL_RWX (_PAGE_DIRTY | _PAGE_RW | _PAGE_HWWRITE | _PAGE_EXEC) +#define _PAGE_KERNEL_RW (_PAGE_DIRTY | _PAGE_RW) +#define _PAGE_KERNEL_RWX (_PAGE_DIRTY | _PAGE_RW | _PAGE_EXEC) #define _PMD_PRESENT 0x400 /* PMD points to page of PTEs */ #define _PMD_PRESENT_MASK _PMD_PRESENT @@ -85,21 +84,5 @@ #define PAGE_READONLY __pgprot(_PAGE_BASE | _PAGE_USER) #define PAGE_READONLY_X __pgprot(_PAGE_BASE | _PAGE_USER | _PAGE_EXEC) -#ifndef __ASSEMBLY__ -static inline pte_t pte_wrprotect(pte_t pte) -{ - return __pte(pte_val(pte) & ~(_PAGE_RW | _PAGE_HWWRITE)); -} - -#define pte_wrprotect pte_wrprotect - -static inline pte_t pte_mkclean(pte_t pte) -{ - return __pte(pte_val(pte) & ~(_PAGE_DIRTY | _PAGE_HWWRITE)); -} - -#define pte_mkclean pte_mkclean -#endif - #endif /* __KERNEL__ */ #endif /* _ASM_POWERPC_NOHASH_32_PTE_40x_H */ diff --git a/arch/powerpc/include/asm/nohash/32/pte-8xx.h b/arch/powerpc/include/asm/nohash/32/pte-8xx.h index c9e4b2d90f65..66f403a7da44 100644 --- a/arch/powerpc/include/asm/nohash/32/pte-8xx.h +++ b/arch/powerpc/include/asm/nohash/32/pte-8xx.h @@ -46,6 +46,8 @@ #define _PAGE_NA 0x0200 /* Supervisor NA, User no access */ #define _PAGE_RO 0x0600 /* Supervisor RO, User no access */ +#define _PAGE_HUGE 0x0800 /* Copied to L1 PS bit 29 */ + /* cache related flags non existing on 8xx */ #define _PAGE_COHERENT 0 #define _PAGE_WRITETHRU 0 @@ -128,7 +130,7 @@ static inline pte_t pte_mkuser(pte_t pte) static inline pte_t pte_mkhuge(pte_t pte) { - return __pte(pte_val(pte) | _PAGE_SPS); + return __pte(pte_val(pte) | _PAGE_SPS | _PAGE_HUGE); } #define pte_mkhuge pte_mkhuge diff --git a/arch/powerpc/include/asm/nohash/32/slice.h b/arch/powerpc/include/asm/nohash/32/slice.h deleted file mode 100644 index 39eb0154ae2d..000000000000 --- a/arch/powerpc/include/asm/nohash/32/slice.h +++ /dev/null @@ -1,20 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _ASM_POWERPC_NOHASH_32_SLICE_H -#define _ASM_POWERPC_NOHASH_32_SLICE_H - -#ifdef CONFIG_PPC_MM_SLICES - -#define SLICE_LOW_SHIFT 26 /* 64 slices */ -#define SLICE_LOW_TOP (0x100000000ull) -#define SLICE_NUM_LOW (SLICE_LOW_TOP >> SLICE_LOW_SHIFT) -#define GET_LOW_SLICE_INDEX(addr) ((addr) >> SLICE_LOW_SHIFT) - -#define SLICE_HIGH_SHIFT 0 -#define SLICE_NUM_HIGH 0ul -#define GET_HIGH_SLICE_INDEX(addr) (addr & 0) - -#define SLB_ADDR_LIMIT_DEFAULT DEFAULT_MAP_WINDOW - -#endif /* CONFIG_PPC_MM_SLICES */ - -#endif /* _ASM_POWERPC_NOHASH_32_SLICE_H */ diff --git a/arch/powerpc/include/asm/nohash/64/pgalloc.h b/arch/powerpc/include/asm/nohash/64/pgalloc.h index b9534a793293..668aee6017e7 100644 --- a/arch/powerpc/include/asm/nohash/64/pgalloc.h +++ b/arch/powerpc/include/asm/nohash/64/pgalloc.h @@ -15,7 +15,7 @@ struct vmemmap_backing { }; extern struct vmemmap_backing *vmemmap_list; -#define pgd_populate(MM, PGD, PUD) pgd_set(PGD, (unsigned long)PUD) +#define p4d_populate(MM, P4D, PUD) p4d_set(P4D, (unsigned long)PUD) static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr) { diff --git a/arch/powerpc/include/asm/nohash/64/pgtable-4k.h b/arch/powerpc/include/asm/nohash/64/pgtable-4k.h index c40ec32b8194..fe2f4c9acd9e 100644 --- a/arch/powerpc/include/asm/nohash/64/pgtable-4k.h +++ b/arch/powerpc/include/asm/nohash/64/pgtable-4k.h @@ -2,7 +2,7 @@ #ifndef _ASM_POWERPC_NOHASH_64_PGTABLE_4K_H #define _ASM_POWERPC_NOHASH_64_PGTABLE_4K_H -#include <asm-generic/5level-fixup.h> +#include <asm-generic/pgtable-nop4d.h> /* * Entries per page directory level. The PTE level must use a 64b record @@ -45,43 +45,39 @@ #define PMD_MASKED_BITS 0 /* Bits to mask out from a PUD to get to the PMD page */ #define PUD_MASKED_BITS 0 -/* Bits to mask out from a PGD to get to the PUD page */ -#define PGD_MASKED_BITS 0 +/* Bits to mask out from a P4D to get to the PUD page */ +#define P4D_MASKED_BITS 0 /* * 4-level page tables related bits */ -#define pgd_none(pgd) (!pgd_val(pgd)) -#define pgd_bad(pgd) (pgd_val(pgd) == 0) -#define pgd_present(pgd) (pgd_val(pgd) != 0) -#define pgd_page_vaddr(pgd) (pgd_val(pgd) & ~PGD_MASKED_BITS) +#define p4d_none(p4d) (!p4d_val(p4d)) +#define p4d_bad(p4d) (p4d_val(p4d) == 0) +#define p4d_present(p4d) (p4d_val(p4d) != 0) +#define p4d_page_vaddr(p4d) (p4d_val(p4d) & ~P4D_MASKED_BITS) #ifndef __ASSEMBLY__ -static inline void pgd_clear(pgd_t *pgdp) +static inline void p4d_clear(p4d_t *p4dp) { - *pgdp = __pgd(0); + *p4dp = __p4d(0); } -static inline pte_t pgd_pte(pgd_t pgd) +static inline pte_t p4d_pte(p4d_t p4d) { - return __pte(pgd_val(pgd)); + return __pte(p4d_val(p4d)); } -static inline pgd_t pte_pgd(pte_t pte) +static inline p4d_t pte_p4d(pte_t pte) { - return __pgd(pte_val(pte)); + return __p4d(pte_val(pte)); } -extern struct page *pgd_page(pgd_t pgd); +extern struct page *p4d_page(p4d_t p4d); #endif /* !__ASSEMBLY__ */ -#define pud_offset(pgdp, addr) \ - (((pud_t *) pgd_page_vaddr(*(pgdp))) + \ - (((addr) >> PUD_SHIFT) & (PTRS_PER_PUD - 1))) - #define pud_ERROR(e) \ pr_err("%s:%d: bad pud %08lx.\n", __FILE__, __LINE__, pud_val(e)) diff --git a/arch/powerpc/include/asm/nohash/64/pgtable.h b/arch/powerpc/include/asm/nohash/64/pgtable.h index 9a33b8bd842d..6cb8aa357191 100644 --- a/arch/powerpc/include/asm/nohash/64/pgtable.h +++ b/arch/powerpc/include/asm/nohash/64/pgtable.h @@ -175,35 +175,13 @@ static inline pud_t pte_pud(pte_t pte) return __pud(pte_val(pte)); } #define pud_write(pud) pte_write(pud_pte(pud)) -#define pgd_write(pgd) pte_write(pgd_pte(pgd)) +#define p4d_write(pgd) pte_write(p4d_pte(p4d)) -static inline void pgd_set(pgd_t *pgdp, unsigned long val) +static inline void p4d_set(p4d_t *p4dp, unsigned long val) { - *pgdp = __pgd(val); + *p4dp = __p4d(val); } -/* - * Find an entry in a page-table-directory. We combine the address region - * (the high order N bits) and the pgd portion of the address. - */ -#define pgd_index(address) (((address) >> (PGDIR_SHIFT)) & (PTRS_PER_PGD - 1)) - -#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address)) - -#define pmd_offset(pudp,addr) \ - (((pmd_t *) pud_page_vaddr(*(pudp))) + (((addr) >> PMD_SHIFT) & (PTRS_PER_PMD - 1))) - -#define pte_offset_kernel(dir,addr) \ - (((pte_t *) pmd_page_vaddr(*(dir))) + (((addr) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))) - -#define pte_offset_map(dir,addr) pte_offset_kernel((dir), (addr)) - -static inline void pte_unmap(pte_t *pte) { } - -/* to find an entry in a kernel page-table-directory */ -/* This now only contains the vmalloc pages */ -#define pgd_offset_k(address) pgd_offset(&init_mm, address) - /* Atomic PTE updates */ static inline unsigned long pte_update(struct mm_struct *mm, unsigned long addr, @@ -211,22 +189,9 @@ static inline unsigned long pte_update(struct mm_struct *mm, unsigned long set, int huge) { -#ifdef PTE_ATOMIC_UPDATES - unsigned long old, tmp; - - __asm__ __volatile__( - "1: ldarx %0,0,%3 # pte_update\n\ - andc %1,%0,%4 \n\ - or %1,%1,%6\n\ - stdcx. %1,0,%3 \n\ - bne- 1b" - : "=&r" (old), "=&r" (tmp), "=m" (*ptep) - : "r" (ptep), "r" (clr), "m" (*ptep), "r" (set) - : "cc" ); -#else unsigned long old = pte_val(*ptep); *ptep = __pte((old & ~clr) | set); -#endif + /* huge pages use the old page table lock */ if (!huge) assert_pte_locked(mm, addr); @@ -310,21 +275,8 @@ static inline void __ptep_set_access_flags(struct vm_area_struct *vma, unsigned long bits = pte_val(entry) & (_PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_RW | _PAGE_EXEC); -#ifdef PTE_ATOMIC_UPDATES - unsigned long old, tmp; - - __asm__ __volatile__( - "1: ldarx %0,0,%4\n\ - or %0,%3,%0\n\ - stdcx. %0,0,%4\n\ - bne- 1b" - :"=&r" (old), "=&r" (tmp), "=m" (*ptep) - :"r" (bits), "r" (ptep), "m" (*ptep) - :"cc"); -#else unsigned long old = pte_val(*ptep); *ptep = __pte(old | bits); -#endif flush_tlb_page(vma, address); } diff --git a/arch/powerpc/include/asm/nohash/pgtable.h b/arch/powerpc/include/asm/nohash/pgtable.h index 7fed9dc0f147..4b7c3472eab1 100644 --- a/arch/powerpc/include/asm/nohash/pgtable.h +++ b/arch/powerpc/include/asm/nohash/pgtable.h @@ -56,7 +56,7 @@ static inline bool pte_exec(pte_t pte) { return pte_val(pte) & _PAGE_EXEC; } #ifdef CONFIG_NUMA_BALANCING /* * These work without NUMA balancing but the kernel does not care. See the - * comment in include/asm-generic/pgtable.h . On powerpc, this will only + * comment in include/linux/pgtable.h . On powerpc, this will only * work for user pages and always return true for kernel pages. */ static inline int pte_protnone(pte_t pte) @@ -130,12 +130,10 @@ static inline pte_t pte_exprotect(pte_t pte) return __pte(pte_val(pte) & ~_PAGE_EXEC); } -#ifndef pte_mkclean static inline pte_t pte_mkclean(pte_t pte) { return __pte(pte_val(pte) & ~_PAGE_DIRTY); } -#endif static inline pte_t pte_mkold(pte_t pte) { @@ -267,7 +265,7 @@ extern pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn, static inline int hugepd_ok(hugepd_t hpd) { #ifdef CONFIG_PPC_8xx - return ((hpd_val(hpd) & 0x4) != 0); + return ((hpd_val(hpd) & _PMD_PAGE_MASK) == _PMD_PAGE_8M); #else /* We clear the top bit to indicate hugepd */ return (hpd_val(hpd) && (hpd_val(hpd) & PD_HUGE) == 0); diff --git a/arch/powerpc/include/asm/paca.h b/arch/powerpc/include/asm/paca.h index e3cc9eb9204d..45a839a7c6cf 100644 --- a/arch/powerpc/include/asm/paca.h +++ b/arch/powerpc/include/asm/paca.h @@ -29,6 +29,7 @@ #include <asm/hmi.h> #include <asm/cpuidle.h> #include <asm/atomic.h> +#include <asm/rtas-types.h> #include <asm-generic/mmiowb_types.h> @@ -256,6 +257,7 @@ struct paca_struct { u64 l1d_flush_size; #endif #ifdef CONFIG_PPC_PSERIES + struct rtas_args *rtas_args_reentrant; u8 *mce_data_buf; /* buffer to hold per cpu rtas errlog */ #endif /* CONFIG_PPC_PSERIES */ diff --git a/arch/powerpc/include/asm/page.h b/arch/powerpc/include/asm/page.h index 3ee8df0f66e0..a63fe6f3a0ff 100644 --- a/arch/powerpc/include/asm/page.h +++ b/arch/powerpc/include/asm/page.h @@ -249,13 +249,6 @@ static inline bool pfn_valid(unsigned long pfn) #include <asm/page_32.h> #endif -/* align addr on a size boundary - adjust address up/down if needed */ -#define _ALIGN_UP(addr, size) __ALIGN_KERNEL(addr, size) -#define _ALIGN_DOWN(addr, size) ((addr)&(~((typeof(addr))(size)-1))) - -/* align addr on a size boundary - adjust address up if needed */ -#define _ALIGN(addr,size) _ALIGN_UP(addr,size) - /* * Don't compare things with KERNELBASE or PAGE_OFFSET to test for * "kernelness", use is_kernel_addr() - it should do what you want. diff --git a/arch/powerpc/include/asm/pci-bridge.h b/arch/powerpc/include/asm/pci-bridge.h index 69f4cb3b7c56..b92e81b256e5 100644 --- a/arch/powerpc/include/asm/pci-bridge.h +++ b/arch/powerpc/include/asm/pci-bridge.h @@ -66,7 +66,7 @@ struct pci_controller { void __iomem *io_base_virt; #ifdef CONFIG_PPC64 - void *io_base_alloc; + void __iomem *io_base_alloc; #endif resource_size_t io_base_phys; resource_size_t pci_io_size; diff --git a/arch/powerpc/include/asm/pgtable.h b/arch/powerpc/include/asm/pgtable.h index b1f1d5339735..f7613f43c9cf 100644 --- a/arch/powerpc/include/asm/pgtable.h +++ b/arch/powerpc/include/asm/pgtable.h @@ -41,25 +41,6 @@ struct mm_struct; #ifndef __ASSEMBLY__ -#ifdef CONFIG_PPC32 -static inline pmd_t *pmd_ptr(struct mm_struct *mm, unsigned long va) -{ - return pmd_offset(pud_offset(pgd_offset(mm, va), va), va); -} - -static inline pmd_t *pmd_ptr_k(unsigned long va) -{ - return pmd_offset(pud_offset(pgd_offset_k(va), va), va); -} - -static inline pte_t *virt_to_kpte(unsigned long vaddr) -{ - pmd_t *pmd = pmd_ptr_k(vaddr); - - return pmd_none(*pmd) ? NULL : pte_offset_kernel(pmd, vaddr); -} -#endif - #include <asm/tlbflush.h> /* Keep these as a macros to avoid include dependency mess */ @@ -76,6 +57,13 @@ static inline pgprot_t pte_pgprot(pte_t pte) return __pgprot(pte_flags); } +#ifndef pmd_page_vaddr +static inline unsigned long pmd_page_vaddr(pmd_t pmd) +{ + return ((unsigned long)__va(pmd_val(pmd) & ~PMD_MASKED_BITS)); +} +#define pmd_page_vaddr pmd_page_vaddr +#endif /* * ZERO_PAGE is a global shared page that is always zero: used * for zero-mapped memory areas etc.. @@ -96,8 +84,6 @@ extern unsigned long ioremap_bot; */ #define kern_addr_valid(addr) (1) -#include <asm-generic/pgtable.h> - #ifndef CONFIG_TRANSPARENT_HUGEPAGE #define pmd_large(pmd) 0 #endif @@ -107,6 +93,8 @@ unsigned long vmalloc_to_phys(void *vmalloc_addr); void pgtable_cache_add(unsigned int shift); +pte_t *early_pte_alloc_kernel(pmd_t *pmdp, unsigned long va); + #if defined(CONFIG_STRICT_KERNEL_RWX) || defined(CONFIG_PPC32) void mark_initmem_nx(void); #else @@ -158,9 +146,9 @@ static inline bool pud_is_leaf(pud_t pud) } #endif -#ifndef pgd_is_leaf -#define pgd_is_leaf pgd_is_leaf -static inline bool pgd_is_leaf(pgd_t pgd) +#ifndef p4d_is_leaf +#define p4d_is_leaf p4d_is_leaf +static inline bool p4d_is_leaf(p4d_t p4d) { return false; } diff --git a/arch/powerpc/include/asm/pkeys.h b/arch/powerpc/include/asm/pkeys.h index 20ebf153c871..2fe6cae14d10 100644 --- a/arch/powerpc/include/asm/pkeys.h +++ b/arch/powerpc/include/asm/pkeys.h @@ -101,7 +101,7 @@ static inline bool mm_pkey_is_allocated(struct mm_struct *mm, int pkey) /* * Returns a positive, 5-bit key on success, or -1 on failure. - * Relies on the mmap_sem to protect against concurrency in mm_pkey_alloc() and + * Relies on the mmap_lock to protect against concurrency in mm_pkey_alloc() and * mm_pkey_free(). */ static inline int mm_pkey_alloc(struct mm_struct *mm) diff --git a/arch/powerpc/include/asm/ppc-opcode.h b/arch/powerpc/include/asm/ppc-opcode.h index c1df75edde44..2a39c716c343 100644 --- a/arch/powerpc/include/asm/ppc-opcode.h +++ b/arch/powerpc/include/asm/ppc-opcode.h @@ -158,6 +158,9 @@ /* VMX Vector Store Instructions */ #define OP_31_XOP_STVX 231 +/* Prefixed Instructions */ +#define OP_PREFIX 1 + #define OP_31 31 #define OP_LWZ 32 #define OP_STFS 52 diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h index eedcbfb9a6ff..52a67835057a 100644 --- a/arch/powerpc/include/asm/processor.h +++ b/arch/powerpc/include/asm/processor.h @@ -180,14 +180,14 @@ struct thread_struct { int fpexc_mode; /* floating-point exception mode */ unsigned int align_ctl; /* alignment handling control */ #ifdef CONFIG_HAVE_HW_BREAKPOINT - struct perf_event *ptrace_bps[HBP_NUM]; + struct perf_event *ptrace_bps[HBP_NUM_MAX]; /* * Helps identify source of single-step exception and subsequent * hw-breakpoint enablement */ - struct perf_event *last_hit_ubp; + struct perf_event *last_hit_ubp[HBP_NUM_MAX]; #endif /* CONFIG_HAVE_HW_BREAKPOINT */ - struct arch_hw_breakpoint hw_brk; /* info on the hardware breakpoint */ + struct arch_hw_breakpoint hw_brk[HBP_NUM_MAX]; /* hardware breakpoint info */ unsigned long trap_nr; /* last trap # on this thread */ u8 load_slb; /* Ages out SLB preload cache entries */ u8 load_fp; @@ -272,7 +272,6 @@ struct thread_struct { unsigned mmcr0; unsigned used_ebb; - unsigned int used_vas; #endif }; @@ -301,14 +300,12 @@ struct thread_struct { #else #define INIT_THREAD { \ .ksp = INIT_SP, \ - .regs = (struct pt_regs *)INIT_SP - 1, /* XXX bogus, I think */ \ .addr_limit = KERNEL_DS, \ .fpexc_mode = 0, \ - .fscr = FSCR_TAR | FSCR_EBB \ } #endif -#define task_pt_regs(tsk) ((struct pt_regs *)(tsk)->thread.regs) +#define task_pt_regs(tsk) ((tsk)->thread.regs) unsigned long get_wchan(struct task_struct *p); diff --git a/arch/powerpc/include/asm/prom.h b/arch/powerpc/include/asm/prom.h index 94e3fd54f2c8..324a13351749 100644 --- a/arch/powerpc/include/asm/prom.h +++ b/arch/powerpc/include/asm/prom.h @@ -117,6 +117,7 @@ extern int of_read_drc_info_cell(struct property **prop, #define OV1_PPC_2_07 0x01 /* set if we support PowerPC 2.07 */ #define OV1_PPC_3_00 0x80 /* set if we support PowerPC 3.00 */ +#define OV1_PPC_3_1 0x40 /* set if we support PowerPC 3.1 */ /* Option vector 2: Open Firmware options supported */ #define OV2_REAL_MODE 0x20 /* set if we want OF in real mode */ diff --git a/arch/powerpc/include/asm/ptrace.h b/arch/powerpc/include/asm/ptrace.h index e0195e6b892b..ac3970fff0d5 100644 --- a/arch/powerpc/include/asm/ptrace.h +++ b/arch/powerpc/include/asm/ptrace.h @@ -179,6 +179,22 @@ extern int ptrace_put_reg(struct task_struct *task, int regno, #define current_pt_regs() \ ((struct pt_regs *)((unsigned long)task_stack_page(current) + THREAD_SIZE) - 1) + +#ifdef __powerpc64__ +#ifdef CONFIG_PPC_BOOK3S +#define TRAP_FLAGS_MASK 0x10 +#define TRAP(regs) ((regs)->trap & ~TRAP_FLAGS_MASK) +#define FULL_REGS(regs) true +#define SET_FULL_REGS(regs) do { } while (0) +#else +#define TRAP_FLAGS_MASK 0x11 +#define TRAP(regs) ((regs)->trap & ~TRAP_FLAGS_MASK) +#define FULL_REGS(regs) (((regs)->trap & 1) == 0) +#define SET_FULL_REGS(regs) ((regs)->trap |= 1) +#endif +#define CHECK_FULL_REGS(regs) BUG_ON(!FULL_REGS(regs)) +#define NV_REG_POISON 0xdeadbeefdeadbeefUL +#else /* * We use the least-significant bit of the trap field to indicate * whether we have saved the full set of registers, or only a @@ -186,17 +202,13 @@ extern int ptrace_put_reg(struct task_struct *task, int regno, * On 4xx we use the next bit to indicate whether the exception * is a critical exception (1 means it is). */ +#define TRAP_FLAGS_MASK 0x1F +#define TRAP(regs) ((regs)->trap & ~TRAP_FLAGS_MASK) #define FULL_REGS(regs) (((regs)->trap & 1) == 0) -#ifndef __powerpc64__ +#define SET_FULL_REGS(regs) ((regs)->trap |= 1) #define IS_CRITICAL_EXC(regs) (((regs)->trap & 2) != 0) #define IS_MCHECK_EXC(regs) (((regs)->trap & 4) != 0) #define IS_DEBUG_EXC(regs) (((regs)->trap & 8) != 0) -#endif /* ! __powerpc64__ */ -#define TRAP(regs) ((regs)->trap & ~0xF) -#ifdef __powerpc64__ -#define NV_REG_POISON 0xdeadbeefdeadbeefUL -#define CHECK_FULL_REGS(regs) BUG_ON(regs->trap & 1) -#else #define NV_REG_POISON 0xdeadbeef #define CHECK_FULL_REGS(regs) \ do { \ @@ -205,6 +217,26 @@ do { \ } while (0) #endif /* __powerpc64__ */ +static inline void set_trap(struct pt_regs *regs, unsigned long val) +{ + regs->trap = (regs->trap & TRAP_FLAGS_MASK) | (val & ~TRAP_FLAGS_MASK); +} + +static inline bool trap_is_syscall(struct pt_regs *regs) +{ + return TRAP(regs) == 0xc00; +} + +static inline bool trap_norestart(struct pt_regs *regs) +{ + return regs->trap & 0x10; +} + +static inline void set_trap_norestart(struct pt_regs *regs) +{ + regs->trap |= 0x10; +} + #define arch_has_single_step() (1) #ifndef CONFIG_BOOK3S_601 #define arch_has_block_step() (true) diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h index da5cab038e25..88e6c78100d9 100644 --- a/arch/powerpc/include/asm/reg.h +++ b/arch/powerpc/include/asm/reg.h @@ -283,14 +283,16 @@ #define CTRL_CT1 0x40000000 /* thread 1 */ #define CTRL_TE 0x00c00000 /* thread enable */ #define CTRL_RUNLATCH 0x1 -#define SPRN_DAWR 0xB4 +#define SPRN_DAWR0 0xB4 +#define SPRN_DAWR1 0xB5 #define SPRN_RPR 0xBA /* Relative Priority Register */ #define SPRN_CIABR 0xBB #define CIABR_PRIV 0x3 #define CIABR_PRIV_USER 1 #define CIABR_PRIV_SUPER 2 #define CIABR_PRIV_HYPER 3 -#define SPRN_DAWRX 0xBC +#define SPRN_DAWRX0 0xBC +#define SPRN_DAWRX1 0xBD #define DAWRX_USER __MASK(0) #define DAWRX_KERNEL __MASK(1) #define DAWRX_HYP __MASK(2) @@ -397,6 +399,7 @@ #define SPRN_RWMR 0x375 /* Region-Weighting Mode Register */ /* HFSCR and FSCR bit numbers are the same */ +#define FSCR_PREFIX_LG 13 /* Enable Prefix Instructions */ #define FSCR_SCV_LG 12 /* Enable System Call Vectored */ #define FSCR_MSGP_LG 10 /* Enable MSGP */ #define FSCR_TAR_LG 8 /* Enable Target Address Register */ @@ -408,11 +411,13 @@ #define FSCR_VECVSX_LG 1 /* Enable VMX/VSX */ #define FSCR_FP_LG 0 /* Enable Floating Point */ #define SPRN_FSCR 0x099 /* Facility Status & Control Register */ +#define FSCR_PREFIX __MASK(FSCR_PREFIX_LG) #define FSCR_SCV __MASK(FSCR_SCV_LG) #define FSCR_TAR __MASK(FSCR_TAR_LG) #define FSCR_EBB __MASK(FSCR_EBB_LG) #define FSCR_DSCR __MASK(FSCR_DSCR_LG) #define SPRN_HFSCR 0xbe /* HV=1 Facility Status & Control Register */ +#define HFSCR_PREFIX __MASK(FSCR_PREFIX_LG) #define HFSCR_MSGP __MASK(FSCR_MSGP_LG) #define HFSCR_TAR __MASK(FSCR_TAR_LG) #define HFSCR_EBB __MASK(FSCR_EBB_LG) @@ -476,16 +481,18 @@ #define PCR_VEC_DIS (__MASK(63-0)) /* Vec. disable (bit NA since POWER8) */ #define PCR_VSX_DIS (__MASK(63-1)) /* VSX disable (bit NA since POWER8) */ #define PCR_TM_DIS (__MASK(63-2)) /* Trans. memory disable (POWER8) */ -#define PCR_HIGH_BITS (PCR_VEC_DIS | PCR_VSX_DIS | PCR_TM_DIS) +#define PCR_MMA_DIS (__MASK(63-3)) /* Matrix-Multiply Accelerator */ +#define PCR_HIGH_BITS (PCR_MMA_DIS | PCR_VEC_DIS | PCR_VSX_DIS | PCR_TM_DIS) /* * These bits are used in the function kvmppc_set_arch_compat() to specify and * determine both the compatibility level which we want to emulate and the * compatibility level which the host is capable of emulating. */ +#define PCR_ARCH_300 0x10 /* Architecture 3.00 */ #define PCR_ARCH_207 0x8 /* Architecture 2.07 */ #define PCR_ARCH_206 0x4 /* Architecture 2.06 */ #define PCR_ARCH_205 0x2 /* Architecture 2.05 */ -#define PCR_LOW_BITS (PCR_ARCH_207 | PCR_ARCH_206 | PCR_ARCH_205) +#define PCR_LOW_BITS (PCR_ARCH_207 | PCR_ARCH_206 | PCR_ARCH_205 | PCR_ARCH_300) #define PCR_MASK ~(PCR_HIGH_BITS | PCR_LOW_BITS) /* PCR Reserved Bits */ #define SPRN_HEIR 0x153 /* Hypervisor Emulated Instruction Register */ #define SPRN_TLBINDEXR 0x154 /* P7 TLB control register */ @@ -759,7 +766,7 @@ #endif #define SRR1_ISI_NOPT 0x40000000 /* ISI: Not found in hash */ -#define SRR1_ISI_N_OR_G 0x10000000 /* ISI: Access is no-exec or G */ +#define SRR1_ISI_N_G_OR_CIP 0x10000000 /* ISI: Access is no-exec or G or CI for a prefixed instruction */ #define SRR1_ISI_PROT 0x08000000 /* ISI: Other protection fault */ #define SRR1_WAKEMASK 0x00380000 /* reason for wakeup */ #define SRR1_WAKEMASK_P8 0x003c0000 /* reason for wakeup on POWER8 and 9 */ @@ -786,6 +793,8 @@ #define SRR1_PROGADDR 0x00010000 /* SRR0 contains subsequent addr */ #define SRR1_MCE_MCP 0x00080000 /* Machine check signal caused interrupt */ +#define SRR1_BOUNDARY 0x10000000 /* Prefixed instruction crosses 64-byte boundary */ +#define SRR1_PREFIXED 0x20000000 /* Exception caused by prefixed instruction */ #define SPRN_HSRR0 0x13A /* Save/Restore Register 0 */ #define SPRN_HSRR1 0x13B /* Save/Restore Register 1 */ diff --git a/arch/powerpc/include/asm/reg_booke.h b/arch/powerpc/include/asm/reg_booke.h index f26fe482fbca..ff30f1076162 100644 --- a/arch/powerpc/include/asm/reg_booke.h +++ b/arch/powerpc/include/asm/reg_booke.h @@ -663,60 +663,6 @@ #define EPC_EPID 0x00003fff #define EPC_EPID_SHIFT 0 -/* - * The IBM-403 is an even more odd special case, as it is much - * older than the IBM-405 series. We put these down here incase someone - * wishes to support these machines again. - */ -#ifdef CONFIG_403GCX -/* Special Purpose Registers (SPRNs)*/ -#define SPRN_TBHU 0x3CC /* Time Base High User-mode */ -#define SPRN_TBLU 0x3CD /* Time Base Low User-mode */ -#define SPRN_CDBCR 0x3D7 /* Cache Debug Control Register */ -#define SPRN_TBHI 0x3DC /* Time Base High */ -#define SPRN_TBLO 0x3DD /* Time Base Low */ -#define SPRN_DBCR 0x3F2 /* Debug Control Register */ -#define SPRN_PBL1 0x3FC /* Protection Bound Lower 1 */ -#define SPRN_PBL2 0x3FE /* Protection Bound Lower 2 */ -#define SPRN_PBU1 0x3FD /* Protection Bound Upper 1 */ -#define SPRN_PBU2 0x3FF /* Protection Bound Upper 2 */ - - -/* Bit definitions for the DBCR. */ -#define DBCR_EDM DBCR0_EDM -#define DBCR_IDM DBCR0_IDM -#define DBCR_RST(x) (((x) & 0x3) << 28) -#define DBCR_RST_NONE 0 -#define DBCR_RST_CORE 1 -#define DBCR_RST_CHIP 2 -#define DBCR_RST_SYSTEM 3 -#define DBCR_IC DBCR0_IC /* Instruction Completion Debug Evnt */ -#define DBCR_BT DBCR0_BT /* Branch Taken Debug Event */ -#define DBCR_EDE DBCR0_EDE /* Exception Debug Event */ -#define DBCR_TDE DBCR0_TDE /* TRAP Debug Event */ -#define DBCR_FER 0x00F80000 /* First Events Remaining Mask */ -#define DBCR_FT 0x00040000 /* Freeze Timers on Debug Event */ -#define DBCR_IA1 0x00020000 /* Instr. Addr. Compare 1 Enable */ -#define DBCR_IA2 0x00010000 /* Instr. Addr. Compare 2 Enable */ -#define DBCR_D1R 0x00008000 /* Data Addr. Compare 1 Read Enable */ -#define DBCR_D1W 0x00004000 /* Data Addr. Compare 1 Write Enable */ -#define DBCR_D1S(x) (((x) & 0x3) << 12) /* Data Adrr. Compare 1 Size */ -#define DAC_BYTE 0 -#define DAC_HALF 1 -#define DAC_WORD 2 -#define DAC_QUAD 3 -#define DBCR_D2R 0x00000800 /* Data Addr. Compare 2 Read Enable */ -#define DBCR_D2W 0x00000400 /* Data Addr. Compare 2 Write Enable */ -#define DBCR_D2S(x) (((x) & 0x3) << 8) /* Data Addr. Compare 2 Size */ -#define DBCR_SBT 0x00000040 /* Second Branch Taken Debug Event */ -#define DBCR_SED 0x00000020 /* Second Exception Debug Event */ -#define DBCR_STD 0x00000010 /* Second Trap Debug Event */ -#define DBCR_SIA 0x00000008 /* Second IAC Enable */ -#define DBCR_SDA 0x00000004 /* Second DAC Enable */ -#define DBCR_JOI 0x00000002 /* JTAG Serial Outbound Int. Enable */ -#define DBCR_JII 0x00000001 /* JTAG Serial Inbound Int. Enable */ -#endif /* 403GCX */ - /* Some 476 specific registers */ #define SPRN_SSPCR 830 #define SPRN_USPCR 831 diff --git a/arch/powerpc/include/asm/rtas-types.h b/arch/powerpc/include/asm/rtas-types.h new file mode 100644 index 000000000000..aa420561bc10 --- /dev/null +++ b/arch/powerpc/include/asm/rtas-types.h @@ -0,0 +1,124 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +#ifndef _ASM_POWERPC_RTAS_TYPES_H +#define _ASM_POWERPC_RTAS_TYPES_H + +#include <linux/spinlock_types.h> + +typedef __be32 rtas_arg_t; + +struct rtas_args { + __be32 token; + __be32 nargs; + __be32 nret; + rtas_arg_t args[16]; + rtas_arg_t *rets; /* Pointer to return values in args[]. */ +}; + +struct rtas_t { + unsigned long entry; /* physical address pointer */ + unsigned long base; /* physical address pointer */ + unsigned long size; + arch_spinlock_t lock; + struct rtas_args args; + struct device_node *dev; /* virtual address pointer */ +}; + +struct rtas_suspend_me_data { + atomic_t working; /* number of cpus accessing this struct */ + atomic_t done; + int token; /* ibm,suspend-me */ + atomic_t error; + struct completion *complete; /* wait on this until working == 0 */ +}; + +struct rtas_error_log { + /* Byte 0 */ + u8 byte0; /* Architectural version */ + + /* Byte 1 */ + u8 byte1; + /* XXXXXXXX + * XXX 3: Severity level of error + * XX 2: Degree of recovery + * X 1: Extended log present? + * XX 2: Reserved + */ + + /* Byte 2 */ + u8 byte2; + /* XXXXXXXX + * XXXX 4: Initiator of event + * XXXX 4: Target of failed operation + */ + u8 byte3; /* General event or error*/ + __be32 extended_log_length; /* length in bytes */ + unsigned char buffer[1]; /* Start of extended log */ + /* Variable length. */ +}; + +/* RTAS general extended event log, Version 6. The extended log starts + * from "buffer" field of struct rtas_error_log defined above. + */ +struct rtas_ext_event_log_v6 { + /* Byte 0 */ + u8 byte0; + /* XXXXXXXX + * X 1: Log valid + * X 1: Unrecoverable error + * X 1: Recoverable (correctable or successfully retried) + * X 1: Bypassed unrecoverable error (degraded operation) + * X 1: Predictive error + * X 1: "New" log (always 1 for data returned from RTAS) + * X 1: Big Endian + * X 1: Reserved + */ + + /* Byte 1 */ + u8 byte1; /* reserved */ + + /* Byte 2 */ + u8 byte2; + /* XXXXXXXX + * X 1: Set to 1 (indicating log is in PowerPC format) + * XXX 3: Reserved + * XXXX 4: Log format used for bytes 12-2047 + */ + + /* Byte 3 */ + u8 byte3; /* reserved */ + /* Byte 4-11 */ + u8 reserved[8]; /* reserved */ + /* Byte 12-15 */ + __be32 company_id; /* Company ID of the company */ + /* that defines the format for */ + /* the vendor specific log type */ + /* Byte 16-end of log */ + u8 vendor_log[1]; /* Start of vendor specific log */ + /* Variable length. */ +}; + +/* Vendor specific Platform Event Log Format, Version 6, section header */ +struct pseries_errorlog { + __be16 id; /* 0x00 2-byte ASCII section ID */ + __be16 length; /* 0x02 Section length in bytes */ + u8 version; /* 0x04 Section version */ + u8 subtype; /* 0x05 Section subtype */ + __be16 creator_component; /* 0x06 Creator component ID */ + u8 data[]; /* 0x08 Start of section data */ +}; + +/* RTAS pseries hotplug errorlog section */ +struct pseries_hp_errorlog { + u8 resource; + u8 action; + u8 id_type; + u8 reserved; + union { + __be32 drc_index; + __be32 drc_count; + struct { __be32 count, index; } ic; + char drc_name[1]; + } _drc_u; +}; + +#endif /* _ASM_POWERPC_RTAS_TYPES_H */ diff --git a/arch/powerpc/include/asm/rtas.h b/arch/powerpc/include/asm/rtas.h index 3c1887351c71..014968f25f7e 100644 --- a/arch/powerpc/include/asm/rtas.h +++ b/arch/powerpc/include/asm/rtas.h @@ -5,6 +5,7 @@ #include <linux/spinlock.h> #include <asm/page.h> +#include <asm/rtas-types.h> #include <linux/time.h> #include <linux/cpumask.h> @@ -42,33 +43,6 @@ * */ -typedef __be32 rtas_arg_t; - -struct rtas_args { - __be32 token; - __be32 nargs; - __be32 nret; - rtas_arg_t args[16]; - rtas_arg_t *rets; /* Pointer to return values in args[]. */ -}; - -struct rtas_t { - unsigned long entry; /* physical address pointer */ - unsigned long base; /* physical address pointer */ - unsigned long size; - arch_spinlock_t lock; - struct rtas_args args; - struct device_node *dev; /* virtual address pointer */ -}; - -struct rtas_suspend_me_data { - atomic_t working; /* number of cpus accessing this struct */ - atomic_t done; - int token; /* ibm,suspend-me */ - atomic_t error; - struct completion *complete; /* wait on this until working == 0 */ -}; - /* RTAS event classes */ #define RTAS_INTERNAL_ERROR 0x80000000 /* set bit 0 */ #define RTAS_EPOW_WARNING 0x40000000 /* set bit 1 */ @@ -148,31 +122,6 @@ struct rtas_suspend_me_data { /* RTAS check-exception vector offset */ #define RTAS_VECTOR_EXTERNAL_INTERRUPT 0x500 -struct rtas_error_log { - /* Byte 0 */ - uint8_t byte0; /* Architectural version */ - - /* Byte 1 */ - uint8_t byte1; - /* XXXXXXXX - * XXX 3: Severity level of error - * XX 2: Degree of recovery - * X 1: Extended log present? - * XX 2: Reserved - */ - - /* Byte 2 */ - uint8_t byte2; - /* XXXXXXXX - * XXXX 4: Initiator of event - * XXXX 4: Target of failed operation - */ - uint8_t byte3; /* General event or error*/ - __be32 extended_log_length; /* length in bytes */ - unsigned char buffer[1]; /* Start of extended log */ - /* Variable length. */ -}; - static inline uint8_t rtas_error_severity(const struct rtas_error_log *elog) { return (elog->byte1 & 0xE0) >> 5; @@ -212,47 +161,6 @@ uint32_t rtas_error_extended_log_length(const struct rtas_error_log *elog) #define RTAS_V6EXT_COMPANY_ID_IBM (('I' << 24) | ('B' << 16) | ('M' << 8)) -/* RTAS general extended event log, Version 6. The extended log starts - * from "buffer" field of struct rtas_error_log defined above. - */ -struct rtas_ext_event_log_v6 { - /* Byte 0 */ - uint8_t byte0; - /* XXXXXXXX - * X 1: Log valid - * X 1: Unrecoverable error - * X 1: Recoverable (correctable or successfully retried) - * X 1: Bypassed unrecoverable error (degraded operation) - * X 1: Predictive error - * X 1: "New" log (always 1 for data returned from RTAS) - * X 1: Big Endian - * X 1: Reserved - */ - - /* Byte 1 */ - uint8_t byte1; /* reserved */ - - /* Byte 2 */ - uint8_t byte2; - /* XXXXXXXX - * X 1: Set to 1 (indicating log is in PowerPC format) - * XXX 3: Reserved - * XXXX 4: Log format used for bytes 12-2047 - */ - - /* Byte 3 */ - uint8_t byte3; /* reserved */ - /* Byte 4-11 */ - uint8_t reserved[8]; /* reserved */ - /* Byte 12-15 */ - __be32 company_id; /* Company ID of the company */ - /* that defines the format for */ - /* the vendor specific log type */ - /* Byte 16-end of log */ - uint8_t vendor_log[1]; /* Start of vendor specific log */ - /* Variable length. */ -}; - static inline uint8_t rtas_ext_event_log_format(struct rtas_ext_event_log_v6 *ext_log) { @@ -287,16 +195,6 @@ inline uint32_t rtas_ext_event_company_id(struct rtas_ext_event_log_v6 *ext_log) #define PSERIES_ELOG_SECT_ID_HOTPLUG (('H' << 8) | 'P') #define PSERIES_ELOG_SECT_ID_MCE (('M' << 8) | 'C') -/* Vendor specific Platform Event Log Format, Version 6, section header */ -struct pseries_errorlog { - __be16 id; /* 0x00 2-byte ASCII section ID */ - __be16 length; /* 0x02 Section length in bytes */ - uint8_t version; /* 0x04 Section version */ - uint8_t subtype; /* 0x05 Section subtype */ - __be16 creator_component; /* 0x06 Creator component ID */ - uint8_t data[]; /* 0x08 Start of section data */ -}; - static inline uint16_t pseries_errorlog_id(struct pseries_errorlog *sect) { @@ -309,20 +207,6 @@ inline uint16_t pseries_errorlog_length(struct pseries_errorlog *sect) return be16_to_cpu(sect->length); } -/* RTAS pseries hotplug errorlog section */ -struct pseries_hp_errorlog { - u8 resource; - u8 action; - u8 id_type; - u8 reserved; - union { - __be32 drc_index; - __be32 drc_count; - struct { __be32 count, index; } ic; - char drc_name[1]; - } _drc_u; -}; - #define PSERIES_HP_ELOG_RESOURCE_CPU 1 #define PSERIES_HP_ELOG_RESOURCE_MEM 2 #define PSERIES_HP_ELOG_RESOURCE_SLOT 3 @@ -352,6 +236,7 @@ extern struct rtas_t rtas; extern int rtas_token(const char *service); extern int rtas_service_present(const char *service); extern int rtas_call(int token, int, int, int *, ...); +int rtas_call_reentrant(int token, int nargs, int nret, int *outputs, ...); void rtas_call_unlocked(struct rtas_args *args, int token, int nargs, int nret, ...); extern void __noreturn rtas_restart(char *cmd); @@ -483,5 +368,11 @@ static inline void rtas_initialize(void) { }; extern int call_rtas(const char *, int, int, unsigned long *, ...); +#ifdef CONFIG_HV_PERF_CTRS +void read_24x7_sys_info(void); +#else +static inline void read_24x7_sys_info(void) { } +#endif + #endif /* __KERNEL__ */ #endif /* _POWERPC_RTAS_H */ diff --git a/arch/powerpc/include/asm/slice.h b/arch/powerpc/include/asm/slice.h index c6f466f4c241..0bdd9c62eca0 100644 --- a/arch/powerpc/include/asm/slice.h +++ b/arch/powerpc/include/asm/slice.h @@ -4,8 +4,6 @@ #ifdef CONFIG_PPC_BOOK3S_64 #include <asm/book3s/64/slice.h> -#elif defined(CONFIG_PPC_MMU_NOHASH_32) -#include <asm/nohash/32/slice.h> #endif #ifndef __ASSEMBLY__ diff --git a/arch/powerpc/include/asm/spinlock.h b/arch/powerpc/include/asm/spinlock.h index 860228e917dc..2d620896cdae 100644 --- a/arch/powerpc/include/asm/spinlock.h +++ b/arch/powerpc/include/asm/spinlock.h @@ -23,7 +23,6 @@ #endif #include <asm/synch.h> #include <asm/ppc-opcode.h> -#include <asm/asm-405.h> #ifdef CONFIG_PPC64 /* use 0x800000yy when locked, where yy == CPU number */ @@ -210,7 +209,6 @@ static inline long __arch_read_trylock(arch_rwlock_t *rw) __DO_SIGN_EXTEND " addic. %0,%0,1\n\ ble- 2f\n" - PPC405_ERR77(0,%1) " stwcx. %0,0,%1\n\ bne- 1b\n" PPC_ACQUIRE_BARRIER @@ -234,7 +232,6 @@ static inline long __arch_write_trylock(arch_rwlock_t *rw) "1: " PPC_LWARX(%0,0,%2,1) "\n\ cmpwi 0,%0,0\n\ bne- 2f\n" - PPC405_ERR77(0,%1) " stwcx. %1,0,%2\n\ bne- 1b\n" PPC_ACQUIRE_BARRIER @@ -292,7 +289,6 @@ static inline void arch_read_unlock(arch_rwlock_t *rw) PPC_RELEASE_BARRIER "1: lwarx %0,0,%1\n\ addic %0,%0,-1\n" - PPC405_ERR77(0,%1) " stwcx. %0,0,%1\n\ bne- 1b" : "=&r"(tmp) diff --git a/arch/powerpc/include/asm/sstep.h b/arch/powerpc/include/asm/sstep.h index 769f055509c9..3b01c69a44aa 100644 --- a/arch/powerpc/include/asm/sstep.h +++ b/arch/powerpc/include/asm/sstep.h @@ -2,6 +2,7 @@ /* * Copyright (C) 2004 Paul Mackerras <paulus@au.ibm.com>, IBM */ +#include <asm/inst.h> struct pt_regs; @@ -15,9 +16,9 @@ struct pt_regs; * Note that IS_MTMSRD returns true for both an mtmsr (32-bit) * and an mtmsrd (64-bit). */ -#define IS_MTMSRD(instr) (((instr) & 0xfc0007be) == 0x7c000124) -#define IS_RFID(instr) (((instr) & 0xfc0007fe) == 0x4c000024) -#define IS_RFI(instr) (((instr) & 0xfc0007fe) == 0x4c000064) +#define IS_MTMSRD(instr) ((ppc_inst_val(instr) & 0xfc0007be) == 0x7c000124) +#define IS_RFID(instr) ((ppc_inst_val(instr) & 0xfc0007fe) == 0x4c000024) +#define IS_RFI(instr) ((ppc_inst_val(instr) & 0xfc0007fe) == 0x4c000064) enum instruction_type { COMPUTE, /* arith/logical/CR op, etc. */ @@ -48,6 +49,8 @@ enum instruction_type { #define INSTR_TYPE_MASK 0x1f +#define OP_IS_LOAD(type) ((LOAD <= (type) && (type) <= LOAD_VSX) || (type) == LARX) +#define OP_IS_STORE(type) ((STORE <= (type) && (type) <= STORE_VSX) || (type) == STCX) #define OP_IS_LOAD_STORE(type) (LOAD <= (type) && (type) <= STCX) /* Compute flags, ORed in with type */ @@ -89,11 +92,15 @@ enum instruction_type { #define VSX_LDLEFT 4 /* load VSX register from left */ #define VSX_CHECK_VEC 8 /* check MSR_VEC not MSR_VSX for reg >= 32 */ +/* Prefixed flag, ORed in with type */ +#define PREFIXED 0x800 + /* Size field in type word */ #define SIZE(n) ((n) << 12) #define GETSIZE(w) ((w) >> 12) #define GETTYPE(t) ((t) & INSTR_TYPE_MASK) +#define GETLENGTH(t) (((t) & PREFIXED) ? 8 : 4) #define MKOP(t, f, s) ((t) | (f) | SIZE(s)) @@ -132,7 +139,7 @@ union vsx_reg { * otherwise. */ extern int analyse_instr(struct instruction_op *op, const struct pt_regs *regs, - unsigned int instr); + struct ppc_inst instr); /* * Emulate an instruction that can be executed just by updating @@ -149,7 +156,7 @@ void emulate_update_regs(struct pt_regs *reg, struct instruction_op *op); * 0 if it could not be emulated, or -1 for an instruction that * should not be emulated (rfid, mtmsrd clearing MSR_RI, etc.). */ -extern int emulate_step(struct pt_regs *regs, unsigned int instr); +extern int emulate_step(struct pt_regs *regs, struct ppc_inst instr); /* * Emulate a load or store instruction by reading/writing the diff --git a/arch/powerpc/include/asm/switch_to.h b/arch/powerpc/include/asm/switch_to.h index b867b58b1093..fdab93428372 100644 --- a/arch/powerpc/include/asm/switch_to.h +++ b/arch/powerpc/include/asm/switch_to.h @@ -102,8 +102,6 @@ static inline void clear_task_ebb(struct task_struct *t) #endif } -extern int set_thread_uses_vas(void); - extern int set_thread_tidr(struct task_struct *t); #endif /* _ASM_POWERPC_SWITCH_TO_H */ diff --git a/arch/powerpc/include/asm/syscall.h b/arch/powerpc/include/asm/syscall.h index 38d62acfdce7..fd1b518eed17 100644 --- a/arch/powerpc/include/asm/syscall.h +++ b/arch/powerpc/include/asm/syscall.h @@ -26,7 +26,10 @@ static inline int syscall_get_nr(struct task_struct *task, struct pt_regs *regs) * This is important for seccomp so that compat tasks can set r0 = -1 * to reject the syscall. */ - return TRAP(regs) == 0xc00 ? regs->gpr[0] : -1; + if (trap_is_syscall(regs)) + return regs->gpr[0]; + else + return -1; } static inline void syscall_rollback(struct task_struct *task, diff --git a/arch/powerpc/include/asm/time.h b/arch/powerpc/include/asm/time.h index 39ce95016a3a..b287cfc2dd85 100644 --- a/arch/powerpc/include/asm/time.h +++ b/arch/powerpc/include/asm/time.h @@ -51,24 +51,12 @@ struct div_result { static inline unsigned long get_tbl(void) { -#if defined(CONFIG_403GCX) - unsigned long tbl; - asm volatile("mfspr %0, 0x3dd" : "=r" (tbl)); - return tbl; -#else return mftbl(); -#endif } static inline unsigned int get_tbu(void) { -#ifdef CONFIG_403GCX - unsigned int tbu; - asm volatile("mfspr %0, 0x3dc" : "=r" (tbu)); - return tbu; -#else return mftbu(); -#endif } #endif /* !CONFIG_PPC64 */ diff --git a/arch/powerpc/include/asm/tlb.h b/arch/powerpc/include/asm/tlb.h index 7f3a8b902325..862985cf5180 100644 --- a/arch/powerpc/include/asm/tlb.h +++ b/arch/powerpc/include/asm/tlb.h @@ -10,7 +10,7 @@ #ifdef __KERNEL__ #ifndef __powerpc64__ -#include <asm/pgtable.h> +#include <linux/pgtable.h> #endif #include <asm/pgalloc.h> #ifndef __powerpc64__ diff --git a/arch/powerpc/include/asm/uaccess.h b/arch/powerpc/include/asm/uaccess.h index 2f500debae21..64c04ab09112 100644 --- a/arch/powerpc/include/asm/uaccess.h +++ b/arch/powerpc/include/asm/uaccess.h @@ -93,18 +93,63 @@ static inline int __access_ok(unsigned long addr, unsigned long size, #define __get_user(x, ptr) \ __get_user_nocheck((x), (ptr), sizeof(*(ptr)), true) #define __put_user(x, ptr) \ - __put_user_nocheck((__typeof__(*(ptr)))(x), (ptr), sizeof(*(ptr)), true) + __put_user_nocheck((__typeof__(*(ptr)))(x), (ptr), sizeof(*(ptr))) +#define __put_user_goto(x, ptr, label) \ + __put_user_nocheck_goto((__typeof__(*(ptr)))(x), (ptr), sizeof(*(ptr)), label) #define __get_user_allowed(x, ptr) \ __get_user_nocheck((x), (ptr), sizeof(*(ptr)), false) -#define __put_user_allowed(x, ptr) \ - __put_user_nocheck((__typeof__(*(ptr)))(x), (ptr), sizeof(*(ptr)), false) #define __get_user_inatomic(x, ptr) \ __get_user_nosleep((x), (ptr), sizeof(*(ptr))) #define __put_user_inatomic(x, ptr) \ __put_user_nosleep((__typeof__(*(ptr)))(x), (ptr), sizeof(*(ptr))) +#ifdef CONFIG_PPC64 + +#define ___get_user_instr(gu_op, dest, ptr) \ +({ \ + long __gui_ret = 0; \ + unsigned long __gui_ptr = (unsigned long)ptr; \ + struct ppc_inst __gui_inst; \ + unsigned int __prefix, __suffix; \ + __gui_ret = gu_op(__prefix, (unsigned int __user *)__gui_ptr); \ + if (__gui_ret == 0) { \ + if ((__prefix >> 26) == OP_PREFIX) { \ + __gui_ret = gu_op(__suffix, \ + (unsigned int __user *)__gui_ptr + 1); \ + __gui_inst = ppc_inst_prefix(__prefix, \ + __suffix); \ + } else { \ + __gui_inst = ppc_inst(__prefix); \ + } \ + if (__gui_ret == 0) \ + (dest) = __gui_inst; \ + } \ + __gui_ret; \ +}) + +#define get_user_instr(x, ptr) \ + ___get_user_instr(get_user, x, ptr) + +#define __get_user_instr(x, ptr) \ + ___get_user_instr(__get_user, x, ptr) + +#define __get_user_instr_inatomic(x, ptr) \ + ___get_user_instr(__get_user_inatomic, x, ptr) + +#else /* !CONFIG_PPC64 */ +#define get_user_instr(x, ptr) \ + get_user((x).val, (u32 __user *)(ptr)) + +#define __get_user_instr(x, ptr) \ + __get_user_nocheck((x).val, (u32 __user *)(ptr), sizeof(u32), true) + +#define __get_user_instr_inatomic(x, ptr) \ + __get_user_nosleep((x).val, (u32 __user *)(ptr), sizeof(u32)) + +#endif /* CONFIG_PPC64 */ + extern long __put_user_bad(void); /* @@ -162,17 +207,18 @@ do { \ prevent_write_to_user(ptr, size); \ } while (0) -#define __put_user_nocheck(x, ptr, size, do_allow) \ +#define __put_user_nocheck(x, ptr, size) \ ({ \ long __pu_err; \ __typeof__(*(ptr)) __user *__pu_addr = (ptr); \ + __typeof__(*(ptr)) __pu_val = (x); \ + __typeof__(size) __pu_size = (size); \ + \ if (!is_kernel_addr((unsigned long)__pu_addr)) \ might_fault(); \ - __chk_user_ptr(ptr); \ - if (do_allow) \ - __put_user_size((x), __pu_addr, (size), __pu_err); \ - else \ - __put_user_size_allowed((x), __pu_addr, (size), __pu_err); \ + __chk_user_ptr(__pu_addr); \ + __put_user_size(__pu_val, __pu_addr, __pu_size, __pu_err); \ + \ __pu_err; \ }) @@ -180,9 +226,13 @@ do { \ ({ \ long __pu_err = -EFAULT; \ __typeof__(*(ptr)) __user *__pu_addr = (ptr); \ + __typeof__(*(ptr)) __pu_val = (x); \ + __typeof__(size) __pu_size = (size); \ + \ might_fault(); \ - if (access_ok(__pu_addr, size)) \ - __put_user_size((x), __pu_addr, (size), __pu_err); \ + if (access_ok(__pu_addr, __pu_size)) \ + __put_user_size(__pu_val, __pu_addr, __pu_size, __pu_err); \ + \ __pu_err; \ }) @@ -190,12 +240,62 @@ do { \ ({ \ long __pu_err; \ __typeof__(*(ptr)) __user *__pu_addr = (ptr); \ - __chk_user_ptr(ptr); \ - __put_user_size((x), __pu_addr, (size), __pu_err); \ + __typeof__(*(ptr)) __pu_val = (x); \ + __typeof__(size) __pu_size = (size); \ + \ + __chk_user_ptr(__pu_addr); \ + __put_user_size(__pu_val, __pu_addr, __pu_size, __pu_err); \ + \ __pu_err; \ }) +#define __put_user_asm_goto(x, addr, label, op) \ + asm volatile goto( \ + "1: " op "%U1%X1 %0,%1 # put_user\n" \ + EX_TABLE(1b, %l2) \ + : \ + : "r" (x), "m" (*addr) \ + : \ + : label) + +#ifdef __powerpc64__ +#define __put_user_asm2_goto(x, ptr, label) \ + __put_user_asm_goto(x, ptr, label, "std") +#else /* __powerpc64__ */ +#define __put_user_asm2_goto(x, addr, label) \ + asm volatile goto( \ + "1: stw%X1 %0, %1\n" \ + "2: stw%X1 %L0, %L1\n" \ + EX_TABLE(1b, %l2) \ + EX_TABLE(2b, %l2) \ + : \ + : "r" (x), "m" (*addr) \ + : \ + : label) +#endif /* __powerpc64__ */ + +#define __put_user_size_goto(x, ptr, size, label) \ +do { \ + switch (size) { \ + case 1: __put_user_asm_goto(x, ptr, label, "stb"); break; \ + case 2: __put_user_asm_goto(x, ptr, label, "sth"); break; \ + case 4: __put_user_asm_goto(x, ptr, label, "stw"); break; \ + case 8: __put_user_asm2_goto(x, ptr, label); break; \ + default: __put_user_bad(); \ + } \ +} while (0) + +#define __put_user_nocheck_goto(x, ptr, size, label) \ +do { \ + __typeof__(*(ptr)) __user *__pu_addr = (ptr); \ + if (!is_kernel_addr((unsigned long)__pu_addr)) \ + might_fault(); \ + __chk_user_ptr(ptr); \ + __put_user_size_goto((x), __pu_addr, (size), label); \ +} while (0) + + extern long __get_user_bad(void); /* @@ -283,15 +383,18 @@ do { \ long __gu_err; \ __long_type(*(ptr)) __gu_val; \ __typeof__(*(ptr)) __user *__gu_addr = (ptr); \ - __chk_user_ptr(ptr); \ + __typeof__(size) __gu_size = (size); \ + \ + __chk_user_ptr(__gu_addr); \ if (!is_kernel_addr((unsigned long)__gu_addr)) \ might_fault(); \ barrier_nospec(); \ if (do_allow) \ - __get_user_size(__gu_val, __gu_addr, (size), __gu_err); \ + __get_user_size(__gu_val, __gu_addr, __gu_size, __gu_err); \ else \ - __get_user_size_allowed(__gu_val, __gu_addr, (size), __gu_err); \ + __get_user_size_allowed(__gu_val, __gu_addr, __gu_size, __gu_err); \ (x) = (__typeof__(*(ptr)))__gu_val; \ + \ __gu_err; \ }) @@ -300,12 +403,15 @@ do { \ long __gu_err = -EFAULT; \ __long_type(*(ptr)) __gu_val = 0; \ __typeof__(*(ptr)) __user *__gu_addr = (ptr); \ + __typeof__(size) __gu_size = (size); \ + \ might_fault(); \ - if (access_ok(__gu_addr, (size))) { \ + if (access_ok(__gu_addr, __gu_size)) { \ barrier_nospec(); \ - __get_user_size(__gu_val, __gu_addr, (size), __gu_err); \ + __get_user_size(__gu_val, __gu_addr, __gu_size, __gu_err); \ } \ (x) = (__force __typeof__(*(ptr)))__gu_val; \ + \ __gu_err; \ }) @@ -314,10 +420,13 @@ do { \ long __gu_err; \ __long_type(*(ptr)) __gu_val; \ __typeof__(*(ptr)) __user *__gu_addr = (ptr); \ - __chk_user_ptr(ptr); \ + __typeof__(size) __gu_size = (size); \ + \ + __chk_user_ptr(__gu_addr); \ barrier_nospec(); \ - __get_user_size(__gu_val, __gu_addr, (size), __gu_err); \ + __get_user_size(__gu_val, __gu_addr, __gu_size, __gu_err); \ (x) = (__force __typeof__(*(ptr)))__gu_val; \ + \ __gu_err; \ }) @@ -468,10 +577,51 @@ static __must_check inline bool user_access_begin(const void __user *ptr, size_t #define user_access_save prevent_user_access_return #define user_access_restore restore_user_access +static __must_check inline bool +user_read_access_begin(const void __user *ptr, size_t len) +{ + if (unlikely(!access_ok(ptr, len))) + return false; + allow_read_from_user(ptr, len); + return true; +} +#define user_read_access_begin user_read_access_begin +#define user_read_access_end prevent_current_read_from_user + +static __must_check inline bool +user_write_access_begin(const void __user *ptr, size_t len) +{ + if (unlikely(!access_ok(ptr, len))) + return false; + allow_write_to_user((void __user *)ptr, len); + return true; +} +#define user_write_access_begin user_write_access_begin +#define user_write_access_end prevent_current_write_to_user + #define unsafe_op_wrap(op, err) do { if (unlikely(op)) goto err; } while (0) #define unsafe_get_user(x, p, e) unsafe_op_wrap(__get_user_allowed(x, p), e) -#define unsafe_put_user(x, p, e) unsafe_op_wrap(__put_user_allowed(x, p), e) +#define unsafe_put_user(x, p, e) __put_user_goto(x, p, e) + #define unsafe_copy_to_user(d, s, l, e) \ - unsafe_op_wrap(raw_copy_to_user_allowed(d, s, l), e) +do { \ + u8 __user *_dst = (u8 __user *)(d); \ + const u8 *_src = (const u8 *)(s); \ + size_t _len = (l); \ + int _i; \ + \ + for (_i = 0; _i < (_len & ~(sizeof(long) - 1)); _i += sizeof(long)) \ + __put_user_goto(*(long*)(_src + _i), (long __user *)(_dst + _i), e);\ + if (IS_ENABLED(CONFIG_PPC64) && (_len & 4)) { \ + __put_user_goto(*(u32*)(_src + _i), (u32 __user *)(_dst + _i), e); \ + _i += 4; \ + } \ + if (_len & 2) { \ + __put_user_goto(*(u16*)(_src + _i), (u16 __user *)(_dst + _i), e); \ + _i += 2; \ + } \ + if (_len & 1) \ + __put_user_goto(*(u8*)(_src + _i), (u8 __user *)(_dst + _i), e);\ +} while (0) #endif /* _ARCH_POWERPC_UACCESS_H */ diff --git a/arch/powerpc/include/asm/uprobes.h b/arch/powerpc/include/asm/uprobes.h index 2bbdf27d09b5..5bf65f5d44a9 100644 --- a/arch/powerpc/include/asm/uprobes.h +++ b/arch/powerpc/include/asm/uprobes.h @@ -11,10 +11,11 @@ #include <linux/notifier.h> #include <asm/probes.h> +#include <asm/inst.h> typedef ppc_opcode_t uprobe_opcode_t; -#define MAX_UINSN_BYTES 4 +#define MAX_UINSN_BYTES 8 #define UPROBE_XOL_SLOT_BYTES (MAX_UINSN_BYTES) /* The following alias is needed for reference from arch-agnostic code */ @@ -23,8 +24,8 @@ typedef ppc_opcode_t uprobe_opcode_t; struct arch_uprobe { union { - u32 insn; - u32 ixol; + struct ppc_inst insn; + struct ppc_inst ixol; }; }; diff --git a/arch/powerpc/include/asm/vas.h b/arch/powerpc/include/asm/vas.h index f93e6b0f5c84..e33f80b0ea81 100644 --- a/arch/powerpc/include/asm/vas.h +++ b/arch/powerpc/include/asm/vas.h @@ -86,7 +86,6 @@ struct vas_tx_win_attr { int wcreds_max; int lpid; int pidr; /* hardware PID (from SPRN_PID) */ - int pid; /* linux process id */ int pswid; int rsvd_txbuf_count; int tc_mode; @@ -163,4 +162,16 @@ int vas_copy_crb(void *crb, int offset); */ int vas_paste_crb(struct vas_window *win, int offset, bool re); +/* + * Register / unregister coprocessor type to VAS API which will be exported + * to user space. Applications can use this API to open / close window + * which can be used to send / receive requests directly to cooprcessor. + * + * Only NX GZIP coprocessor type is supported now, but this API can be + * used for others in future. + */ +int vas_register_coproc_api(struct module *mod, enum vas_cop_type cop_type, + const char *name); +void vas_unregister_coproc_api(void); + #endif /* __ASM_POWERPC_VAS_H */ diff --git a/arch/powerpc/include/asm/vermagic.h b/arch/powerpc/include/asm/vermagic.h new file mode 100644 index 000000000000..b054a8576e5d --- /dev/null +++ b/arch/powerpc/include/asm/vermagic.h @@ -0,0 +1,20 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_VERMAGIC_H +#define _ASM_VERMAGIC_H + +#ifdef CONFIG_MPROFILE_KERNEL +#define MODULE_ARCH_VERMAGIC_FTRACE "mprofile-kernel " +#else +#define MODULE_ARCH_VERMAGIC_FTRACE "" +#endif + +#ifdef CONFIG_RELOCATABLE +#define MODULE_ARCH_VERMAGIC_RELOCATABLE "relocatable " +#else +#define MODULE_ARCH_VERMAGIC_RELOCATABLE "" +#endif + +#define MODULE_ARCH_VERMAGIC \ + MODULE_ARCH_VERMAGIC_FTRACE MODULE_ARCH_VERMAGIC_RELOCATABLE + +#endif /* _ASM_VERMAGIC_H */ diff --git a/arch/powerpc/include/asm/xilinx_intc.h b/arch/powerpc/include/asm/xilinx_intc.h deleted file mode 100644 index ca9aa162fb09..000000000000 --- a/arch/powerpc/include/asm/xilinx_intc.h +++ /dev/null @@ -1,16 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-or-later */ -/* - * Xilinx intc external definitions - * - * Copyright 2007 Secret Lab Technologies Ltd. - */ -#ifndef _ASM_POWERPC_XILINX_INTC_H -#define _ASM_POWERPC_XILINX_INTC_H - -#ifdef __KERNEL__ - -extern void __init xilinx_intc_init_tree(void); -extern unsigned int xintc_get_irq(void); - -#endif /* __KERNEL__ */ -#endif /* _ASM_POWERPC_XILINX_INTC_H */ diff --git a/arch/powerpc/include/asm/xilinx_pci.h b/arch/powerpc/include/asm/xilinx_pci.h deleted file mode 100644 index 7a8275caf6af..000000000000 --- a/arch/powerpc/include/asm/xilinx_pci.h +++ /dev/null @@ -1,21 +0,0 @@ -/* - * Xilinx pci external definitions - * - * Copyright 2009 Roderick Colenbrander - * Copyright 2009 Secret Lab Technologies Ltd. - * - * This file is licensed under the terms of the GNU General Public License - * version 2. This program is licensed "as is" without any warranty of any - * kind, whether express or implied. - */ - -#ifndef INCLUDE_XILINX_PCI -#define INCLUDE_XILINX_PCI - -#ifdef CONFIG_XILINX_PCI -extern void __init xilinx_pci_init(void); -#else -static inline void __init xilinx_pci_init(void) { return; } -#endif - -#endif /* INCLUDE_XILINX_PCI */ diff --git a/arch/powerpc/include/asm/xive-regs.h b/arch/powerpc/include/asm/xive-regs.h index 33aee7490cbb..8b211faa0e42 100644 --- a/arch/powerpc/include/asm/xive-regs.h +++ b/arch/powerpc/include/asm/xive-regs.h @@ -37,6 +37,14 @@ #define XIVE_ESB_SET_PQ_10 0xe00 /* Load */ #define XIVE_ESB_SET_PQ_11 0xf00 /* Load */ +/* + * Load-after-store ordering + * + * Adding this offset to the load address will enforce + * load-after-store ordering. This is required to use StoreEOI. + */ +#define XIVE_ESB_LD_ST_MO 0x40 /* Load-after-store ordering */ + #define XIVE_ESB_VAL_P 0x2 #define XIVE_ESB_VAL_Q 0x1 #define XIVE_ESB_INVALID 0xFF diff --git a/arch/powerpc/include/asm/xive.h b/arch/powerpc/include/asm/xive.h index 93f982dbb3d4..d08ea11b271c 100644 --- a/arch/powerpc/include/asm/xive.h +++ b/arch/powerpc/include/asm/xive.h @@ -5,6 +5,8 @@ #ifndef _ASM_POWERPC_XIVE_H #define _ASM_POWERPC_XIVE_H +#include <asm/opal-api.h> + #define XIVE_INVALID_VP 0xffffffff #ifdef CONFIG_PPC_XIVE @@ -108,7 +110,6 @@ void xive_native_free_vp_block(u32 vp_base); int xive_native_populate_irq_data(u32 hw_irq, struct xive_irq_data *data); void xive_cleanup_irq_data(struct xive_irq_data *xd); -u32 xive_native_alloc_irq(void); void xive_native_free_irq(u32 irq); int xive_native_configure_irq(u32 hw_irq, u32 target, u8 prio, u32 sw_irq); @@ -137,6 +138,12 @@ int xive_native_set_queue_state(u32 vp_id, uint32_t prio, u32 qtoggle, u32 qindex); int xive_native_get_vp_state(u32 vp_id, u64 *out_state); bool xive_native_has_queue_state_support(void); +extern u32 xive_native_alloc_irq_on_chip(u32 chip_id); + +static inline u32 xive_native_alloc_irq(void) +{ + return xive_native_alloc_irq_on_chip(OPAL_XIVE_ANY_CHIP); +} #else |